Hello Bob,
Let me quote from the Wizard web page first: Made with 2 rows of 1 inch tubes, that is eqvialent to a 4 row copper brass radiator, it will actually cool like a 5 row copper brass radiator, this is a SIGNIFICANT improvement over the original copper brass radiator. (unquote)
After using this aluminum radiator for 3 years i can say that it is a very fine product, I am running the proper sleeved thermastat, stock 4 blade fan, have the timing correct, new water pump and fresh antifreeze....in other words i have a healthy cooling system and proper motor tune.
On cool days 10F to 50F degrees my running temperture is 130 to 140 degrees, On warmer days say 60 to 85 degree days my Healey maintains 80F to 90F degrees all day long at speeds. I think a electric fan with a thermastat mounted in front of the radiator would be a big help to any car on a hot day when in slow traffic or when sitting still, along with a better fan! These are my results with the Wizard Aluminum radiator.
If you have a healthy cooling system and proper tune you can compare my above results with your running tempertures and decide if there are any advantage in terms of cooling. The obvious advantage is a big weight saving and a brand new reliable well built radiator that won't rust! And it looks like it belongs there! Michael, IL.