Radiator has shot craps

The radiator in my 67 Barracuda has failed and I am not going to have repaired so I am looking for a good replacement.
The car has a small block around around 375 HP, auto trans with A/C.
I would like to go with a drop in replacement with out modifications, aluminum or copper.
I live in a hot and humid climate so this thing has to cool, I will be running the stock 18 inch 7 blade fan and clutch hub.
Can anyone recommend something that they know will work without braking the bank?
Thanks in advance.