I am sorry for the confusion.

I have a 99 OBS Chevy OBS 4x4
I also have a 411 PCM that needs to be installed. Install is easy (just time consuming) need to take each wire and just re-pin it.

What is going in...
6.0, 2wd 4L80e, E-Fans from 06 Sierra
I have the Harness and PCM out of the 00 Chevy HD in which the motor and trans came out of