well gas mileage dont really mater b/c im not going to drive it much mostly to shows an up an down the bolavard im jus looking at wats out there an trying to find the best hp for the money like in my other post about the 383 an vetes if i can build a truck in the 10,000-15,000 dallor range keep in mind i have people so to speak an stay within 2 car lentghs of a whats the price on a new vette? then facter in the weight i guess that would be sucees i want to have it finshed b4 my 15 bday