Between the main tank, saddles, UAT and my hopper tank I will be carrying 140 ounces of fuel. I estimate I have about 10 ounces of unusable fuel in the main tank so I installed an 11 ounce hopper tank. Since I am using a high flow fuel system with all lines 3/16 ID I needed to modify the stopper components to fit the oversized brass tubing. Her are the parts ready to be installed. Note I am using one of the jet tech heavy clunks here as well. these babies are awesome!