Hi David,
   How bad is the radiator? there are some really good radiator shops out there who can repair some pretty ratty stuff. Beware tho' , there are those who would try to sell you a whole new recore, etc.  I just went through this with an Oliver OC-3, but found a fantastic guy who did a first rate job for 80 dollars, compared to the otherguy who wanted $495.
Start in the yellow pages.
                           Cal