Thanks for the info guys! Top of my water seperator fuel filter (factory one) its tapped with 1/8th pipe thread and a fitting is it it. Why can't I just buy a 0-30 psi guage without isolator or sending unit and just run a #3 braided steel line from top of filter to my gauge in the truck??? Wouldn't this save me some money? I have all the fittings lines etc just need gauge and pod! I realize the idea of having fuel in the truck is dangerous but if done correct I don't see this being a problem? Please let me know what you all think and with that in mind where is cheapest place for gauge. Thanks Chris