just wondering if the jdm d16z6 intake manifold, throttle body, fuel rail, injectors, etc perform any different than the usdm one. i'm getting a new one primarily because my IAC valve is shot. but i also realized it was missing a hook up to a lone coolant line that i later found out goes to the tranny on the 5 speeds, but wasn't there in the auto ones. my head was from an auto, so now i know. just wondering if the jdm would be better but i'm getting it anyways even if it's not.