oh ya i have a JDM GA right now as far as i know .....how ever i know it might be because the intake manifold is different and the exhaust manifold that came with it was bigger and also i think the car has some sort of valve lift because when i get on (i have an auto ) i shift 1st out around 37 and around 20 the car jus picks up and it doesnt loose power in the upper rpms like most ppl do that i read about on the forums.