I just pulled my old Harrison radiator out, and weighed it on an accurate industrial scale. 20.5 pounds. The new one from Classic comes in at 19#. This unit looks real good, and is a precise fit. Standard comes with oil cooler holes and plugs to block them. Here are a series of comparison pics-I'm very pleased. Thye shipped it right out, and we Stovebolters get a 10% discount. Landed cost was 314.oo. Link: http://picasaweb.google.com/Jivermo/55ChevyRadiator310012TonPickup?authkey=Gv1sRgCKff0dKGm_fPOA#