Regarding the exhaust, STILL waiting for Subaru & Pro-R to announce details of the exhaust system that will be available. I know they are going for the Miltek but don't know if res or non-res, obviously this route would be warranty friendly.BUT - if they don't get a move on then it'll be back to RRG for a non-res Miltek as already discussed with Riceburner :32 (1): and I'll just take a risk with the warranty on the engine. Not heard of too many engines going pop so should be OK.