To be honest, I don't know what I have in terms of: Block, heads, clutch, flywheel, transmission. This was a "JDM motor & tranny combo" that was shipped to the location where it was installed. I never saw it in person or witnessed any of the work being done. I also am running an oil filter tree that doesn't have hook-ups for the oil cooler (thus not running my oil cooler either). The spark plugs that were in the motor were shorter than TT plugs and had an "R" on them.... IDK!!!! I hope it's not an NA setup with turbos on it :(