Those GTP's are FWD Ebenezer. A buddy of mine I work with has one of a supercharged ones. Its a pretty quick car (not really that fast though) but the motor swap wouldn't be worth the marginal gains in power for the hassle of making it fit. Although parts would be easier to come buy and upgrades for more power later.
Right you are. I traded my VX two days ago. Got a 2004, Chevrolet Silverado 2500 HD Short bed and it has a 8.1 liter gas with an Allison trans. Now I can hook a chain to the house and move it around. It is a TANK. I love it.