Steve, I'm not convinced that ally rads ARE the be all and end all of cooling syst problems. They LOOK good and probably are a tad lighter, but is that weight saving all that important in most cars?....I doubt it !!. My own experience with a well-worked SB Ford in a Sunbeam Tiger has been that a well-designed copper matrixed rad. is quite effective........part inspired by the owner of a rad. shop who advised me that he could build OR supply an ally unit, OR, recore my existing unit with a modern and well designed copper core. Pricing was somewhat similar in all cases. I went for the copper recore and was very glad I did. I have never had heating problems and the unit LOOKS rock stock