Brief Description: Drill holes in ribs for fuel/vapor return.
Well, I decided to go head and add fuel/vapor return lines to both tanks. I used D4 fittings just like the fuel vent line. You can see here where I put the holes. The hole is 7/16". I also put the same holes in the next 2 ribs. I'll run the tube into the third tank bay straight in. I'll have to use a check valve to keep fuel from running the wrong way. Vans sells them.