I could have told you that, oh wait I did
We went 3.9s from 4.11s in the BSM car and went faster 2 seconds around EC, they then went 3.55 from a 34 after I stopped going in and that is what was in it for world time attack
Personally with 350rwkws+ I would go the 3.69s, but then that depends how big your horsies are, I know 3.69s are easy to get for the R200 but finding them for the front diff is proving harder to do, I know there is a WRX that has that ratio but which exact model is what I am finding hard to nail down