I'd love to do that to my Astro, but as Kps396 said, I just can't kill the 4.3.
There are all kinds of swaps that go into 2WD Astro/Safaris, but the issue with swapping into an AWD is that there are no
options concerning front torsion bars. The new engine needs to be of similar weight to the 4.3, or you will need helper shocks to take the added load.
Any idea how much the 2.8 weighs?
John