Ahhh, well we had this decision to make. We needed room for a heat exchanger under the car and we needed the space between the tire well and axle where the factory tank was. Instead in plopping a fuel cell into the tire well and losing all room after a rear battery, an intercooler chiller box and more we decided that this would work. Tanks Inc. makes a budget EFI tank for Mustangs/Street Rods so we said why not as we had a bit of rot in our otherwise Arizona clean car. At the same time we added to crossmembers in the back and now had room for our Saleen heat exchanger. Plan is to run a filler tube from the quarter panel to the tank. Tank is 16 gallons. http://www.tanksinc.com/index.cfm/p...tegory_id=133/home_id=-1/mode=prod/prd129.htm