I like to post retarded questions...

Eaton is a positive displacement..I dont think it's screw type like a whipple or Kenne Bell. You can get (or used to be able to get small displacement blowers from B&M that ran off a single 4bbl. A friend had one on his 302 '84 Mustang. It went 11.60s with it and the right cam and head work. Teh 3.8 Fords can be a PITA. If you want a whole running car, a friend has one for sale for $1500. All built within 2 years, all brand new stuff, upgraded intake, blower, headers, the works. Just lost interest. There's no market for the cars, so you can probably find a whole car cheaper than just a blower.