Do some reading and you'll find out the real cost and headache of doing a top swap.
Rough guess with a GEN V swap and everything, around $1,000 at least.
Look around the For Sale Thread, you can find good deals sometimes. but yeah, (+/-)$1000 for everything.
http://www.grandprixforums.net/genv-northstar-mps-machined-snout-65611.html
^ XPZEED is selling the Supercharger with the TB and MAF that you would need, but you will need to get a pulley (has the modular piece, just no pulley) and you will have to find a LIM for it, and then get it tuned to boot.
So truthfully you will probably spend around a grand unless you find a REALLY good deal.