Need a radiator

Well today I decided to clean out my work shop storage closet moved my Cuda back so I would have room after I was done I noticed water on the floor, Damn my water pump is weeping so gotta fix that I decided while I got the car apart i'll replace the radiator due to the green corrosion looking stuff getting worse, I had no idea finding a stock replacement radiator would be this difficult. I found I place that guarantee exact fit stock replacements, I would go with an aftermarket alum radiator but I don't want a bastardised fit that ends up costing me a grand. Any suggestions would be welcomed.
Author: lou3500