I really like the RDZ OOF drag pipes for that application. The CPI OOF drag pipes work well too, but the RDZ was acctually designed for a blaster...the CPI is a re-worked Big Bore Banshee pipe. If you're looking to make peak power I'd recommend the LA sleeve kit, the price will be very close to a Vito's once you factor in the forged piston upgrade. You'll get a whole lot more cylinder/goodies for your money. PM me if there is anything I can do to help get you goin.
-Brandon