cory69ss-
Take a look at this thread discussing ProCharger vs. Vortech:
https://lateral-g.net/forums/show...5&page=1&pp=10
What kind of power are you looking for now and in the future ?
Since you dont' want to run an intercooler, you want to keep the boost in the single digits. Carbureted versions are better for non-intercooled boost due to their natural "mini-intercooler" effect. Use a cam ground on 114 deg LC to keep from overscavenging the cylinders (Call the Comp Cams tech line, they are very helpful in cam selection). Depending on your intended use HP vs Torque a 2" primary header should be sufficient. Everyone has their opinions of ProCharger vs Vortech. They both make good units. I was originally going to use a Vortech YS trim, but after personal research and recommendations switched to a ProCharger. You will have to decide the size you want. Going slightly larger will do two things for you: 1) Keep the air a little cooler by not spinning the blower as fast and 2) you can crank it up at a future date with a simple pulley change versus having to upgrade the whole blower. I think Jody/Stuart ran a ProCharger D1SC which pumped out around 830-840 RWHP with EFI. How often do you want to change your rear tires ?