Ls K10 swap advice

[Dhartmann]

Hopefully a couple of you have taken on a swap like this as I'm in need of some help. I have a 69 K10 and I would like to buy a complete donor vehicle ranging from 2000-2006 with a 5.3/4L60E setup. Having a tough time sourcing a donor with a manual transfer case, most seem to be electronic. Does anyone know if I use everything out of the donor (motor, trans, case wiring, etc) but replace the electronic TC for a manual one if it will throw the ECU or PCM off and not function correctly? Or can I just simply remove the solenoid on the TC and install a manual shift lever. I just feel like the truck is going to throw a fit since the wiring will no longer be plugged into anything. Any advice would be greatly appreciated, thank you!