I did try it and found my car ran hot at highway speeds. Too much pressure and it never resolved my low speed issues. I just put factory pump on and changed radiator and drove last night and seemed to work great. I wanted to unstand the success rate with this product. I called the company and still waiting for good discussion why it didn't work in my application. Going for another ride today to see if it works out as planned and will provide aan update. Changes made were:
Milodon high flow stat
Autozone 8 blade water pump
Passenger side water pump housing outlet
Dual pass griffin 26 x 17
Shrouded clutch fan
EFI fully controlled timing and AFR
Solid stainless lower hose
To be honest this was the exact setup with minus the pump that that I comparing to Flowkooler. To be clear I changed the radiator and Tryed both pumps. I will chime in again if this didn't resolve issue. By the way I just finished a 1000 mile road trip with the flowkooler in this application and it ran 215 on the highway with the occasional manipulation of throttle to cool down. Let off and let some air cool the engine and reduce the RPM.