I have 2004 cobra that i am installing a 3.4 whipple. I am in need of fuel upgrades. I have decided to go with areturn style system. I have been looking at lethals return system. I like the idea of the quiet pumps in the tank. I have seen other members here with Glenns Performance systems. I want to know what you guys think about the two systems, and what would you use if it were you and why?