First off I wasn't arguing against building a crvtec, but this guy already has the ITR motor. Now, I am aware that the ITR has .3 compression points over the CTR. However, you put CTR pistons in the ITR, and your compression is now roughly 11.75:1, instead of 11.1:1. CTR pistons in ITR block, higher compression. Go here and see for yourself.
http://www.c-speedracing.com/howto/c.../compcalc.html
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