Sound like a cool idea. If memory serves me, I think that the 6.2 was based on the Olds v-8, and used the same mounts and trans bolt pattern. I think that you should be able to modify the motor mounts to work in your 'Burban though. One thing that you will want to watch for is cracking in the heads. They were bad about cracking between the valves. That problem was cured on the replacement heads and on the 6.5 that replaced it.
