That should be a nice swap when your done. You can refer back to my post for my swap as I did my 95 and tried to get some good pictures up. And if you have any specific questions feel free to ask. There are several ways to go about this swap, I highly reccomend planning out your swap as best as possible before you begin to set the DURAMAX in there. Many of the aspects of the swap are much easier with the engine out like wiring and such.
1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, 3.42 gears, 261 T-case
Trans has a mild build with ALOT of help from MIKE L. which included ALTO's for C1-C4 and a PI ML converter
DIAMONDEYE 4" exhaust with a CORSA muffler, AFE stage 1 dry filter, EFILIVE, KENNEDY single pump and pump rub kit.