The Ability Radiator at Yuba City, CA reportedly uses a high-efficiency 4-row radiator core that is manufactured by

http://jbrspecialties.com

J B Radiator Specialties Inc.
Sacramento, California
Phone: (916) 381-4790

My local radiator shop in north Los Angeles uses this same 4-row radiator core to construct 'desert racing' radiators which is popular with the desert racing crowd around Southern California (e.g., SoCal). However, I was told that this 4-row core allows for *less solder* to solder the water tanks on either side of the 4-row core. They actually suggested that the 3-row high-efficiency re-core would be a better choice for durability for this reason. To construct the 4-row high-efficiency re-core using my old radiator tanks was under $300 at my local radiator shop.