in response to both comments:
The beauty of the LS is that it's not heavy at all - The FA20 engine in the GT86 weighs around 170-180kg: https://www.ft86club.com/forums/showthread.php?p=2415250
The LS engine i have (I actually bought it last year with this in mind so I didn't so much have it "Lying around" but this has been my plan for a while and I bought one while I could, they're pretty rare over here!) is also 171kg in the form you see it in my video i.e - no alternator, intake, etc so it'll go up a bit but not by a massive amount.
Granted this does of course mean that the CoG will be higher but I don't think that will be a massive difference over what say the 2JZ would change it by, as that engine weighs in the whopping range of 250-ish kg, and the problem with the SR20 for me personally is they're not actually amazing engines to make north of 350hp on and much like most nissan engines they like to munch oil pumps.
The LS is "old" ish in it's archetecture but unlike the 2JZ or RB series of engines it's not got a load of old 90's tech on it that doesn't stand up to today's standards, it simply has almost no tech at all, it's about as simple as engines come and will easily make well over 400hp without breaking a sweat whereas thanks to it's rather high compression the FA20 is rather highly strung when you try to push past 320hp.. and it doesn't make V8 noises 😋
Not to be overly defensive of my choices, they're both valid arguements it was simple a case for me that i found much more excitement in the thought of owning a 2 door v8 coupe that didn't have say an £80-100k price tag or Jaguar/Aston badge on it and building that myself rather than the thought of having a 4 cylinder wth a turbo and worrying if and when my gearbox is going to blow it's guts, i've kind of "been there and done that" in a way and it didn't excite me as much after thinking it through, I did actually originally want a turbo 86 at first. I even researched and still have a list of parts, turbo, pistons, rods, etc i'd go for if i were to build the engine and go down that route. 😁
p.s v10's sound better than v12's... in my opinion 😋