Pantera 6018, for which I am the current custodian, is also equipped with a Hall radiator. Without an oem radiator available for comparison, and based upon my admittedly less than perfect memory, I would advise Paul that the outlet nipples of his Pantera's oem radiator have been extended to make room for the sucker fans.
Extended or not extended? Pictures from folks with oem radiators would be very helpful at the moment.
If extended, is that the "only" cause of the bulging of his Pantera's radiator outlet nipples, or is the radiator's copper thin "in general". The copper of radiators does get thin with age and mileage.
I know Paul is leaning towards a replacement radiator. But is that his only choice, is a re-core a possibility? All input will help him assess the status of his radiator.