I don't have the credit to buy a new vehicle, so I want to invest in the truck I have. A 1994 Ram 1500 318ci. V8 2wd... What would it cost to convert the susp., axles, and everything on the underside to 3/4 ton? Would it be worth it if I plan on going offraoding? I'd want a 5 spd. conversion too. What might that run me?