I want to use a 5 gallon JAZ fuel tank as ask aux tank acne mount it either where the rear seat goes or on the rear rack. I have questions about plumbing. What size fuel lines are you guys using? Are you relying on gravity to get the fuel to the stock tank? Or fuel pumps? Where are you connecting the aux fuel to the stock tank, drilling the stock tank? How are you venting the tanks? Any help should be appreciated. I am doing a 50cc ride soon and need to get this done!