91 k2500 5.3 swap help

[beertestr]

Ok I tried ls1swap and was told y'all would better suite my needs. So I got a 91 k2500 with a blown engine and wore out trans. Next to it is a 99 z71 with a tore up body... Beyond mounts and possibly a reflash what all am I gonna need? I want to use the 4l60e and also swap the seats and dash over as well. Neither are driven daily so it won't need to be done in a time frame. So any help will be greatly appreciated. Thanks
-Dustin

I can help with mounts. Let me know if you are interested.