Original art for the Willys-Overland Water Fording Kit. Currently selling on eBay for a buy now price of $1,999.
According to cj3a.com it looks like the kit is a MX-735 Waterproofing Kit: "This kit was designed for the Navy and supplied by Willys-Overland for use on Marine Corps CVD radio jeeps. The kit also fit on the G503, W.W.II jeeps. It consisted of numerous parts to be installed on the jeep to make it waterproof. Everything from a new dipstick to a new speedometer were included in the kit. The distributor was replaced with a waterproof metal clad unit. The spark plugs and wires changed to waterproof "aircraft" type. A waterproof Carter YS carburetor replaced the standard WO carburetor. Fittings and vent lines were included to allow an atmospheric vent system to be attached to the transfer case, master cylinder and fuel tank. Two valves activated by a control on the dash allowed the engine crankcase to be naturally pressurized slightly while fording. The electrical system was upgraded with waterproof generator, regulator, starter, switches, horn and wiring. This must have taken a considerable amount of time to install, but when completed, the jeep was always ready to ford, unlike the earlier WV-6 kit."
