OK i have a 93 ls block with .25 oversized usdm itr pistons. I was readding a article on this it seems to be a good setup and flows better then the b16a1 head. I dont know just curious. Can the itr head bolt right on with the oversized pistons? Will I have vavle clearance problems? This or does someone have good readding materil on this swap? maybe that someone has done this before or something?