gmt400 ccsb body on gmt800 frame

[Eddyk]

i’m okay with it being a pretty drawn out process, i’m pretty decent with fabrications so i’m not to worried about the body mounts and stuff like that, the electrical nightmare would be the ****** part for me

 

[CumminsFever]

The electrical side shouldn't be too difficult. In simple terms, you'll run the engine/trans as a standalone system, then the truck will piggyback on a few sensors, and you'll have to install a few sensors.
Please, if you choose to go the frame swap route, take us along for the ride with pics and descriptions!