I have for sale a 1957 Chevrolet Napco 3700. It is a True Factory 4X4. The 6 cylinder engine fires right up and runs great. If you are interested in hearing it run I can send you a video of it running. The truck is very solid with all of the body rust fixed, ot covered up with Bondo. All of the major dents were pulled and are ready for body work.I have pictures of where the dents were pulled and then we shot it with primer to keep it from rusting. It has a small back window, loorboards are solid. The front axle is stamped "Napco 37-18 S". The 4wd worked when I tried it several years ago but I have not tried it recently. If you have any questions please email me and I will do my best to answer them.