Leaderboard

@Mike Here some of my observations of the various kits - bare in mind I thought about this for 18 months before committing to the Reyland kit. I actually ordered but then cancelled both the Essex AP Racing Sprint kit and the Godspeed AP kit, before settling on the Reyland kit, this was after speaking with @Ade and one of the technical team at AP Racing. These are for the approx 330mm kits (355mm+ kits have different requirements) Reyland - AP Kit: Pro's: AP Caliper - CP9200 (2 piece aluminum body) 4 Pistons Dust Boots - Made by Brembo Perfect for Street and track Common Pad Size 330mm x 28mm discs - 2 piece Good thermal capacity High quality caliper by premium brake manufacturer. Keeps stock brake bias Complete kit - Calipers, Pads, Brake lines, brackets, discs Various disc options - Either bolted or floating brake disc hat/bell. AP or Reyland disc's. Clear's the majority of 17" wheels Latest design of caliper by AP Racing - including new paint finish Used by various members of the community - with extensive track use Con's: Reasonably expensive Custom made brackets, which you need to shim to get perfect fitment Won't fit under stock wheels without spacer. Godspeed - Brembo's: Pro's: Brembo caliper 4 piston Dust boots 330 x 28 discs 2 piece discs Cheap Con's: Unknown caliper model Unknown caliper material Unknown piston sizes - not sure what effect this will have on brake bias Unknown pad size No brake lines included Godspeed - AP Kit: Pro's: AP Caliper - CP9040 (2 piece aluminum body) Dust Boots - Made by Brembo Common Pad Size Good thermal capacity High quality caliper by premium brake manufacturer. Latest design of caliper by AP Racing - including new paint finish Con's Reasonably expensive Caliper designed for a 362mm disc - not 330mm as included Caliper designed for a 32mm thick disc - not 30mm as included Ø330mm disc in this caliper will leave a fairly large gap between the discs OD and the calipers disc pathway and this gap can be prone to collecting road debris. 6 pistons - overkill No brake lines included K-Sport: Pro's: Cheap Used by various members of the community - with extensive track use Clear's the majority of 17" wheels Complete kit - Calipers, Pads, Brake lines, brackets, discs 330mm x 32mm? disc - 2 piece Dust boots Perfect for Street and track Con's 8 pistons Unknown piston sizes - not sure what effect this will have on brake bias Unknown pad size Unknown replacement disc price Won't fit under stock wheels without spacer. STi Brembo's - Used on Subaru Impreza WRX STi: Pro's: Cheap Used by various members of the community - with extensive track use Clear's the majority of 17" wheels Complete kit - Calipers, Pads, Brake lines, brackets, discs 326mm x 30mm disc Various disc options Common pad size Dust boots 4 pistons Con's Shifts brake bias forward massively Steel calipers - heavy Bleed nipples need swapping - i.e. caliper refurb before fitment Not a complete kit Won't fit under stock wheels without spacer. Only available second hand RR Racing (Wilwood😞 Pro's: Cheap Wilwood caliper Complete kit - Calipers, Pads, Brake lines, brackets, discs 326mm x 30mm disc - STi disc's so cheap replacements Clear's the majority of 17" wheels Con's 6 pistons no dust boots Won't fit under stock wheels without spacer. Limited pad selection Only available from the US Moves brake bias forward Essex Parts - AP Racing Sprint Kit: Pro's: AP Caliper - CP8350 4 Pistons Perfect for Track Use Common Pad Size 2 piece discs Extremely light High quality caliper by premium brake manufacturer. Complete kit - Calipers, Pads, Brake lines, brackets, discs Clear's the majority of 17" wheels Keeps stock brake bias Used by various members of the community - with extensive track use Con's: Expensive 299x32mm disc's - Can have some thermal issues Only available from the US Won't fit under stock wheels without spacer. No dust boots Not a daily driver friendly caliper AP Racing Genuine kit: Pro's: AP Caliper - CP6600 (2 piece aluminum body) 4 Pistons Dust Boots Perfect for Street and track Keeps stock brake bias Complete kit - Calipers, Pads, Brake lines, brackets, discs Clear's the majority of 17" wheels - including stock wheels Con's: Very Expensive 26mm thick discs Limited pad options Limited disc options Uses older AP caliper Stoptech ST40: Pro's: Stoptech ST40 caliper 4 Pistons Clear's the majority of 17" wheels Complete kit - Calipers, Pads, Brake lines, brackets, discs 328mm x 28mm disc - 2 piece Dust boots Perfect for Street and track Con's Expensive Can't 100% confirm piston sizes Limited pad replacement options Unknown replacement disc cost Won't fit under stock wheels without spacer.

Quick update I received the exhaust in three parts : Header & Overpipe Midpipe Rear silencer I decided to wrap the header with DEI Titanium wrap to avoid heating the engine oil and bay too much. That was for the start of the week. This week end I decided to install the full exhaust in my tiny garage with my car jack stands, it took me the whole day which is pretty good knowing my exhaust is old and has 90 000km (~60 000 miles). I also installed a sound generator suppressor part I 3D printed It was dark by the time I could go out and try it out but I spent 40 minutes smiling. The sound level is a bit lower than with the original exhaust when cruising and that's without the sound generator. I didn't find any drone or noise I didn't want to create . Once you start putting some load on the engine, the sound becomes great ! It revs with a sound I could qualify of stainless steel sound. The exhaust really answers to engine load, if you rev slowly it won't be very loud, if you give the accelerator a dab, it will become more "dramatic". I really love this exhaust and I think it's what this car was lacking : sound and no torque dip (soon for me with my remap). If someone is interested I'll post some pictures / videos of the car with its new exhaust.

Yes plenty of clearance with the 949Racing wheels, see:

Front are 32mm x355mm float in disc type

As Jeff said, Will did indeed do his research which was of great benefit to me when I was looking to upgdrade my brakes. Maybe have a read of this, plenty of info: