I don't recall who checked it out, but the stock fan moves so many more CFM's that no electric comes close. That being said one wonders if you didn't have to use the extra power to turn the stock fan going up the mountain, would the best dual electric fan setup be sufficient. I do hope someone chimes in if they have made the switch. Inquiring minds want to know.
02 2500HD LT D/A SB CC 4X4 BLACK, Westin stainless nerf bars, BW GN Hitch,Racor 60S post oem fuel filter, Oil Guard bypass engine oil Filter. All synthetic fluids. Kennedy boost valve, edge, Modified air intake,EGT & Boost digital gauge,TransferFlow combo fuel & tool box, Air Lift Suspesion Bags Rear & compressor with remote, Bilsteins front & rear, Frontier front replacement bumper.