i have a 2001 itr, what i have done is jdm 4-1 hearders, comptech intake with ice box,jun 9 pound flywheel with act stage 2 clutch,n1 cat back exhaust and test pipe. im running low to high 13's im guessing. well i just want to know what your opinons are cause i have 2 thousand that i what to spend on engine wise and what else should i do??