im not to shure on the new supercharged ones but in the GN the compression raito was dropped from 9to 1 to 8 to1 to handle the compressed air when boost was beig applied. so check to make shure that you won't run into problems or your crank will look like this (follow link)
http://home.earthlink.net/~lstsimpson/. it is not pretty at all. also check that your crank and pistons and connecting rods are going to hold together under boost. putting a motor under boost is not just a bolt on thing (that is if you don't wanna be picking up pieces a few months down the road) so make shre you have all the facts. Im not saying all of this is true im more of a GN turbo guy i don't really know much about the new supercharged motors but boost is boost just don't wanna see you blow something up
Andy