start off with mine;;has a 86 cummins out of a bus in it with a 4 speed trans regeared for towing and this engine..also have a gear venders over/under aux trans with 3;55 gears;;it is a major work horse..going paint a pearl black with ghost flames;;been slamed 5" frt/7" rear ;;has 5000lb air bags to keep level when towing my 38' race car trailer;;have a turbowing on its way for it to help with wind drag when towong my goose neck race car trailer;;;when was towing a 18' open car trailer with a 80 pro/street camero i got 26mpg at 70mph;;;