Hey guys, im new to the site but not to Grand Prix's, i work at a Buick Gmc dealership (used to be Pontiac as well). anyways i have a 1998 gtp and back in 2004 we replaced an engine in a 04 l32 gtp for excessive oil consumption. so my question is will the block and heads work in my vehicle, according to the gm catalog the part numbers are different, was just curious if any of you know or have tired this, Thanks.