My Cobra had a Fluidyne FHP30-COBRA (a variant of the base FHP with different inlet/outlet. My original Shelby-supplied radiator developed an electrolysis leak and after many email exchanges trying to find one and a coincidental question to Fluidyne customer support to see if it could be repaired, they (a Fluidyne VP) explained the failure mode and supplied me with a very low priced (probably their cost) replacement with a port for a "sacrificial anode" (much like is used in water heaters). Both Shelby and Kirkham used these but at some point changed.
I have found that Cobra radiators, especially this one, tend to be quite oversized and especially when combined with the
oil cooler, tend to over cool the engine. I went to a higher temp thermostat to keep the engine running a little warmer.