Most of the radiator manufacturers that sell their products on Ebay will custom make a new aluminum radiator to your specifications. It's just a matter of supplying height and width information and the vehicle-specific type of mounting you want. Don't forget to upgrade the heater core at the same time, as the same pressure limitations apply to it.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!