ok is there a way to tell the diff between usdm gsr cams and jdm gsr cams? or are they the same and next are there any marks on the cams to tell what they are from i was told that these cams my friend gave me were from a jdm gsr. i have a first gen b16 from japan and was thinkin of droping at least the intake cam in if there is a diff i have both in and ex. had them layin around and if they would make a diff i will throw them in. if i do put them in do i have to do anything to the head like hone were the cam sits or is it ok? did some serching and did not come up with much of an answer.
thanks in adv
justin