On my 1971 Pantera I had a Hall Phoenix radiator and was able to fit 12" Spal style fans behind it in the stock position with some tinkering. I also had the AC condenser in front with 10" Spal style fans ahead of it. It all worked well. The car ran cool and the AC worked great.
On my 1972 Pantera I have a similar setup but with larger fans and a Fluidyne radiator. The car is under construction and do not yet know how the cooling performs.
The Hall Phoenix radiator is a good piece of equipment. It cools well and since it is copper will likely live longer than an aluminum radiator. The unit in my 71 was decades old and seemed like it would continue to not leak. However, it is quite a bit heavier than the Fluidyne.