A lot of votes for re-core! I was always a big proponent of the same. That is until I started a radiator company that gives you Mopar owners another choice!
I agree if the car is being restored all original. However, if you plan on driving your car and having fun with it, I would highly suggest you save your original radiator for a possible future sale to someone that is NOT going to drive it. The reasoning is simple; a good recore is going to be more expensive than a higher capacity better cooling new radiator. The recore is going to be 3 rows again. Today's lower octane fuels burn hotter. If you rebuilt your motor with any performance upgrades, the car is going to run hotter. If you drive your 'classic' like most people do, you get in many situations like parades, cruises, street racing etc where you are sitting for extended periods of time. Do you have AC? Yikes!
The point is that the 3 row will 'likely' get the job done but it's going to run hotter than a big 2 row aluminum radiator. That's less comfortable. I would much rather have my car running cooler just based on comfort alone.
Finally, until Cold Case, you couldn't get a C-body aluminum radiator that had stock looking stamped tanks and re-attach your oem fan shroud. If you paint them, only a point judged car show judge would notice.
So cheaper, pretty much the same look and cooler seems to make a whole lot of sense.
If you agree, shoot me a PM for a special member price. If you don't agree, I'm sure I'll here about it! lol!