It looks like I can squeeze the big radiator out of a Cordoba into the space available. It is a tight fit between the frame rails but it clears. The Cordoba shroud also fits just fine and I think I can make the hoses work also. This is an old stock radiator but new ones are available from Rock Auto for $300 so I should be good to go. I'm going to take this radiator over to a shop in the morning and see what they say.