I had a '73 3/4 ton 4WD, 410 gears, limited slip rear, 12:50/ 16.5's, mud and snow tires, Hedman headers, Corvette fuel injection cam, Offy manifold, Holley 650 cfm carb. Best truck I ever had. Real mud and snow goer, Lots of pulling power. Get rid of the Quadra Jet and get a Holley spread...