[WardL]

Roush 427 SR/TW, 512 HP, 10.5:1, 750 Holly, 3.46 rear with 17" wheels & 0.82 OD. I have averaged 13 MPG since purchase. Best was 15. I like to drive 5 over speed limits and expect when on it get close to 6-8. But really, how can you get on it that often when in a few seconds you are going 100 mph? Oh and that is on E10 (10% ethanol gasoline). I confess, I drive conservatively. If you can, take a road trip and drive reasonably. See what you get. It is pretty clear when you drive fast you get lousy mileage. In many ways, when you state your mpg, it is essentially measure of the way you drive.