[kaycee]

Rumor has it that 87-93 are the ones to grab,I just put one in from a 91 the later ones have better internals sun gear ,clutchs,bands etc.It really woke my truck up on the street and cruising at 80 mph reving at 2300RPMS is SAHHHWEEET.You can put a newer trans 4L60E OR 4L80Ein but it will take a stand alone computer to run it.