1986 ram d-50 swap 4g63t

Hi I'm a owner of a 1986 ram d-50 for about 2 year now it has a 4g54b in it and I am looking to swap to 4g63t in it. i've heard these motor are bolt on with the old motor bracket. I was wondering which genaration of the 4g63t is the best for this swap and what other things I'll need to know or have.

To clear things up - the 4G54 is a wide block pattern, the G63B/4G63 is a narrow block pattern (KM145=wide trans/KM132=narrow trans) You can do the swap but you will need a KM132 from a 2.0 (G63B) truck.