Don't know what kind of gas mileage the VW is getting, but a well tuned sbc crate motor with FI and a 700R should be able to get 23-24 mpg. If you want more than that (like 30 +) I would recommend a 1980 VW pickup with a 4 cyl diesel, and a 5 speed trans. That or just lie to him about the gas mileage.