JWT s3 cams - Don't think so
AEM CAI - Not unless you're going NA
b13 AGX's with b13 hyperco's - Front should be fine, rear might not
Stillen Short shifter - Yes
cusco fstb - Yes, the ones we buy are for a GTiR
UR pullies (crank and water) - I want to say no on this one
Prothane motor mounts - No, well maybe the right side one by the head
highport powdercoated valve cover (the gti-r is a fmic) - It will fit, but I think the throttle cable bracket bolts on to the valve cover, so you might want to leave it on.
14" nx rims/tires - Yes, Gtir came stock with the same wheels
clear side markers front and back - gtir has no side markers on the bumpers
AEM CAI - Not unless you're going NA
b13 AGX's with b13 hyperco's - Front should be fine, rear might not
Stillen Short shifter - Yes
cusco fstb - Yes, the ones we buy are for a GTiR
UR pullies (crank and water) - I want to say no on this one
Prothane motor mounts - No, well maybe the right side one by the head
highport powdercoated valve cover (the gti-r is a fmic) - It will fit, but I think the throttle cable bracket bolts on to the valve cover, so you might want to leave it on.
14" nx rims/tires - Yes, Gtir came stock with the same wheels
clear side markers front and back - gtir has no side markers on the bumpers