the SR-240SX is a well known quantity, turbo restrictors and all. (and non-turbo version in STL). There's a few that ran well in Australian Improved Production class. Until they take the BecauseJDM handcuffs off it, it's not going to get built. I was **ALMOST** there until they stuck the -2mm restrictor on it and I figured out how much cheaper it is to run a rotary in Prod and go faster.

GT3 supposedly has the SR16 allowed as well, so there's another option depending on how light you think you can get the chassis.