Keep your performance engine or big block cool with our exclusive aluminum radiator kit. This radiator is custom made and designed for Factory Five Roadster and Challenge Series cars. It has 2 large cores, and since aluminum transfers heat better than brass, it will cool your engine better than a stock, painted radiator. This radiator measures 27.5"x19" and has Ford sized inlets and outlets (1.5" and 1.5"). We've angled the upper inlet to allow for a straighter hose and eliminated the filler on the upper right for simplicity. This radiator requires a remote filler for use, which can also be purchased separately. It will not work with the stock Mustang fan shroud. Other fan mounts such as FFR #12757 and #12758 can be used instead.