I'd come at it the other way. I'd gut the Prius and put in a 36 hp air-cooled VW drivetrain in. They got 35-40 MPG back then and when the CD drops from .41 to .26, I think you could equal the mpg , if not the 1/4 mile times.
gd420mj --
http://ecomodder.com/forum/showthrea...tml#post322130