2000 burb frame under 1972 burb body?

[philliesmvp]

Anybody ever do this combination. I want to put a late model engine in my 72burb but thought that swapping the frame might be better (ride, abs, ease of use of trans, exhaust, etc...). I know the wheelbase will have to be shortened but did not know about if there were any width issues etc... I also posted this in the suspension section but since it is burb specific I thought I might get a better response here.