The 2.8 is a dog. If you swap that in, you will regret it. I had one in my S10 Blazer. Go with the 4.3 Chevy from a late 80's early 90's S10 or S10 Blazer.

88 Raider- sitting on a full size Chevy frame with 35.5x11.50x16 Dyna Torque II tractors
89 Montero- stock 2.6 M/T 30-9.50 BFG all terrains on American Racing Wheels
99 2500 Ram- 285-75-16 Uniroyal all terrains,straight pipes with no cat (yes its loud)