I know you'll enjoy this side of building . There's a great bunch of knowledgeable people here that are always willing to help. Terry summed it up quite well: "You can't really do anything "wrong" with a truck model, because more than likely someone did something even weirder in reality. Wheels, fuel tanks, engines, sleepers, wrecker/dump/mixer bodies can all be swapped around however you want. Welcome to an obsession!"