A good radiator shop can re-core for about the same price as replacement. You may be able to fit a 3-row radiator in there also, or at least what my show called a "high efficiency" radiator. Then you have no fit problems.

-Boyo

'48 Willys CJ-2A / '55.1 Chevy 3600 / '66 Austin-Healey 3000 / '04 Volvo wagon (parenthood!?)