Leroy I have determined that I hooked my fuel pressure gauge to the water drain on my FFM, I am going to leave it but I still want a fuel pressure gauge after the FFM and before the IP so I want to put a cheap mechanical gauge under the hood and leave it. Will ur fuel pressure gauge tap fit the FFM on a 6.2 square FFM? Also on ur fuel heater that can be added to the new fangled FFM u r selling, is it thermastatically controlled or is it on all the time if I wire it to a switch? Not installed filters n Walbro yet cause I want a fuel pressure gauge working so I can monitor the change in pressure as I add the Walbro with pre filter and then the new fangled FFM. Also I want to blow the fuel lines out as I take them loose, if I blow the line out going into the tank am I going to stir up a bunch of stuff, also am I going to blow the sock off, I sorta think that would be a good thing or at least blow a hole in it? Thanks again I really want to do this with just one try and no hair pulling disasters where I have to fix the fix etc! LOL Anybody else have any input just jump in I have no idea what I am doing but me n my hammer and pliers r dying to get started!