I just completed this conversion on 6661, Iused the Fluidyne Radiator and reversiable Hayden fans. You will need 2 90 degree hoses to connect to the stock water pipes, I purchased a NAPA hose (part number 8919) and cut it as needed, for temp sensors they were supplied by Jerry at Pantera International. who also can supply the Radiator. R&i took a little over two hours. Added 2 gal. of coolant, 1 bottle of Water Wetter. The results were incrediable, fans now cycle on and off, even in traffic. Good Luck