I used the same filter head that GDP uses! This filter head uses the Fleetguard FF5320 2-micron filter. I like the compact size of the filter head and the fleetguard fuel filter is the same size as the oil filter. The tricky part was finding a location that the filter could mount inside the engine bay. I don't like the idea of mounting the filter down on the frame rail for several reasons, chance of getting hit, longer fuel hoses needed for routing, away from warmer engine bay during the winter. So, I found an area that I think is ideal, a friend made a bracket for me that I had powdered coated and mounted under the brake master cylinder by the existing 2-bolts. I wasn't able to utilize the area uner the apps as I have an auto trans and there isn't enough room. Besisides my location works great and I can change the fuel filter by reaching my arm between the tire and fender well liner without removing either. Works great for me, hope it helps someone out... .....
P. S. I am also using GDP big line kit and fittings.