i have a 03 dodge 5.9 cummins truck 4x4,my lift pump went out last week and i just recieved the fass ddrp fuel lift pump,and was wondering if i can put a extra fuel filter mounted before the lift pump,also was wondering what is the max fuell pressure i can have before the injection pump? does anyone have a spare fuel pressure gauge there willing to get rid of reasonable,oh i also need to know where to install the fuel guage when i get it. my buddy just did all the same i did on his 99 truck and his fuel filter has 3 opening on the top of his fuel filter housing,mine dont