i see everyone is dying to tell me to go 5 speed and to keep foot off gas and to turbo. but noone is touching the machine questions i am asking. that is the whole point of the post, forum, whatever you want to call it. i have 3 different blocks with 3 different cranks. and no specs on the cylinder head for a jdm. nor the block specs. is it 207 like all other d15 or is it 212 like the d16, or is it somewhere in the middle.