I got a Wizard aluminum radiator for my 71 Road Runner. It was a direct bolt in and the stock shroud worked too. The only thing I had to get for it was reduction fittings for the transmission cooling lines. It was $500 but it does a great job keeping the car cool. I'm not crazy about the look of the top tank, but my car isn't stock so I guess it's okay. I don't think you will find a good direct fit radiator for $300.