08' Envoy 5.3 as potential donor??

[88Ironduke]

Short story is as such. My daily driver 08' Envoy with the aluminum 5.3 is getting towards the end of daily driver life. Its a good motor and runs solid. I'm considering pulling the engine/transmission to use a donor for my 72' C-10long bed.

A couple of questions for the LS gurus. Can I have a shop convert my 4wd (I assume 4L60E) transmission over to a 2wd output tail shaft (I know the guts have to come out), remove the 4wd wiring and flash the ECM to remove knowledge it had a 4wd gear box? Can anyone say if the exhaust manifolds are the same as the TBSS which seem to fit our trucks rather well?

This won't be my first LS swap but it'll be the first time I've pulled one from its factory home to use. Any information you guys have on this particular donor would be appreciated.

Thanks
Paul