I would like some input from some off the guys out there running either one of these systems. I am considering one of two systems: the first is the GDP mechanical lift pump system, and the GFS-392 performance with the walbro pump. What are the pro's and con's of each system. I am planning on doing a full trans build and also and want to put twins on. Any help would be great

Josh

 

Well, IO can only speak of the Walbro kit, but I'm very happy with mine. Easy install (3+hrs) and I get a constant 20 psi. The Walbro pumps are very common so replacement pumps are easy to find (although I doubt you'll ever need to).