scrthn--that tranny is a 3550--means it is a 3500 with a removable bellhousing----chevy has run the 3500 (cast on bell) behind 350 powered trucks for years without any giant problems---but problems will arrise if you think it is for drag racing or other abuse ----i have picked off 2 of them recently at pickaparts for less than $120/each out of 97-98 dakotas....bob