From what i learned from doing mine, I would reccomend building your own to match your set-up. Slight changes in how the mounts are welded together can make the difference between hitting the hood or your steering. People with 2WD trucks can lower the engine down some and get more hood clearance whereas the 4WD app needs to be a bit on the high side.
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.