Ok Im wondering if this could be done. A buddy of mine has an Integ LS (2000) is it possible to add a Type R (or GSR) head to the engine? Also to further build up could we add ITR Valve springs or any other internals to build up the engine??

Ive heard the low-end of the LS and the high-end of a GSR combo is how to get the best power out of that engine....hoping you guys could help! Thanks