Hey do any or all or none of these specs apply to the 18R-GEU 11111-88270 Head motors?? Does anyone have the specs all in one document or on one web page? Also curious, if one was to perform a mild rebuild on an 18Rgeu but replaced the pistons with the older-higher comp. items, would this perform okay or would the cams be all out and stuff? ive got pretty much all standard efi gear.. but if this could be setup with the higher comp and bit of cam work would it get a very noticeable power gain?? or would you need to go all out in rebuilding it to semi-race spec with plenty of work on all aspects of the motor to really get a decent increase? because if so it would be way more cost effective to mildly rebuild it and wack some forced induction on like ive always thought..