Sometimes the stock radiator cap sits at the highest point of the cooling system, and sometimes it doesn't. The latter was the case on this truck, so a remote filler neck was plumbed into the upper radiator hose. A stock radiator and a stock engine-driven fan provide superior cooling, even when the Nevada silt beds get nasty and deep. This truck relies on a '99 4.0 SOHC V6 for locomotion. A compact, powerful engine, it's also easy to come by in many wrecking yards.