Thanks Guys. Not after HP gains, just want a cool motor. Not sure of HP in my motor but it's a 540 stroker in a MP Siamese block. I have 1 1/4" from the nose of the pump to the back of the Rad. The twin electric fans with shroud is 3"s thick. What did you save in depth by going to the flowkooler pump and I guess they make a pulley to go with it? Ron
Also forgot to mention that the radiator is a Griffin two row each 1 1/8" wide with the accompanying shroud and fans. I would be happy with a mechanical fan and shroud if I could get the clearance distance I need. Ron