Ive got a small hole in my supply line so I need to get a new one on there. Should i just go back with a stock one or just put a good rubber one on it? Whats the inside diameter of the stock fuel lines?

 

3/8" supply

5/16" return

buy DIESEL RATED LINE

go from the inj pump to the tank with one piece.

 

I second TIMMY22's suggestion of rubber line. I bought mine from www.fisheriessupply.com Part #125972 and #127167.

Its Trident barrier A1 marine fuel hose that says it "Exceeds ABYC H-24 & H-33,SAEJ1527, ISO 7840 & USCG Type A1"

Seemed like a pretty good per foot price from what I had seen in my looking.