www.modelexpress.net is one place i have bought some stuff. they're great people to do business with. they have swampers under "tires" and a whole lot more. prewired distributors, brake lines, aircleaners, diamond plate, not to mention lots of new and discountinued kits. they have the 68 GMC step right now, and the AMT 72 chev. for all these accessories, check under Model Car Garage.