The original computer works just fine. The 2.8 to 3.4 swap is a basic long block swap. With drill and tap the holes for the starter. With a good O2 sensor and 4.3 tbi, your computer won't know the difference.


Curt B 89RS Calmini Header Delta Cam 33x10.5 BFG MTs & 90 Trooper 3.4 v6, SAS D44 ARB/Hobart 5.38s 35s my pictures