i have a stock GSR and im buying 96 ITR Valvetrain everything besides cams but im thinking of buying skunk2 stage 1 cams that are almost the same as type r's but my main question is that you think its worth upgrading to itr valve train will it make a difference

 

yes

 

If you're not revving pass 8800rpm itr valvetrains should be fine but if you do I say upgrade to sk2, supertech. It's just my experince I had.

 

might as well upgrade to s2 valvetrain

 

wait?
are you asking if it's okay to run gsr valve springs with the skunk tuner1's?
or basically gsr valve train with itr cams?