The radiator we're using is an optional all-aluminum piece sold by Factory Five (PN 14031; $220). It is manufactured by Afco to FFR's specs and has the inlet and outlet fittings properly sized and positioned for the Roadster. The radiator is attached to the frame at the top and to the aluminum panels at the bottom. We used a floor jack to carefully hold the radiator in place for marking the mounting points. Note we temporarily clamped the aluminum nose panels in place to determine the proper radiator angle.