[amac209]

the bolt pattern should be exactly the same for all chevy small& big blocks as far as i know the only thing thats different is the patern for the starter bolts. and flywheel size. the only thing you might want to look at in the pilot bearing. i think the 90's used needle bearings while 87 had a brass bushing i don't know if they're the same size but they probably are. i don't know if your crossmember will bolt up to the new tranny.