I found one for $250 but how much will it cost after i get all of the stuff to hook iy up? And what exactly do I need?

 

if its a stock gen3 m90 that is way to expensive!! you can buy a whole top swap with everything you need for $300-$400

 

Good question! I was getting ready to post this same question

 

Here is a pretty good list of what you need. Supercharger Conversion | 3800 Supercharger Kit | 3800 Series 2 Supercharger Kit

I'd budget for $800-1000 to be safe. You should do headers at the same time to help reduce knock retard.

 

just doing a real quick search here is a guy listing a complete top swap for $400 shipped
ClubGP Message Forum troubleshooting

here is another top swap with the better more efficient gen v blower for $750+shipping
GenV Topswap SC, LIM, TB, VC, L32 heads, injectors, fue lrail, rockers, pushrods

here is a set of brand new zzp headers for $550 if you want them also lol
ClubGP Message Forum troubleshooting

there is a ton of this stuff that comes up for sale everyday you just need to search for it and you will pick up dome awesome deals.

good luck!!