It's $4738.95 new in Summit!!!!!
This is the H.O intercooled kit...this will put a V6 Stang in the low 13's with traction easy...
http://www.summitracing.com/parts/VOR-4FU218-628SQ/
65mm is plenty, 70mm will work as well. A 70mm MAF is plenty, no larger than a 80mm is needed. Depends on if you get the car tuned or a chip. If not, you will have to get a Pro M, PMAS, or C&L meter.
Not mine just passing along a good deal!!!!!!!
http://cgi.ebay.com/ebaymotors/2005-2006-Mustang-V6-Vortech-Supercharger-kit_W0QQitemZ280410599260QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item4149c62f5c
He has his suspension dialed in pretty good and the car is TUNED. Those are the 2 biggest things and most overlooked. He is running a stock cam, partially because it does not require different valve springs. You should have a good combo going with that setup and a good tune.
I'd get the heads...