#10A. Adapter Kit.
(Adapter + Output Shaft)
Swap your 4L60E transmission to the much stronger 4L80E transmission.
You can use the computer you have now on 1998 and up models, with the use of our #10X wiring harness. The transfer case you have now can be used as is, and will be moved 1 3/4 to 3 1/2 inches to the rear.