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One of the first tasks of the Street & Performance crew was to remove the old fuel tank and install a new stainless steel tank from Rock Valley. The Rock Valley tank came with a high-pressure fuel pump already installed. In order to keep the stock gauges, a GM 0 to 90 Ohm sending unit for the gas gauge was also ordered from Rock Valley. If a Stewart Warner gauge is to be used ,a 240-33 Ohm sending unit is required, a VDO gauge will need a 10-180 Ohm sending unit, Ford or Mopar will use a 73-10 Ohm sending unit and the '31 to '54 Chevy will use a 0-30 Ohm sending unit, all of which are available from Rock Valley. These units are used in 6- to 24-inch deep tanks and operate on 6- or 12-volt systems. The installation requires connecting together the gauge, fuel pump and ground pigtails to make the connections easier after the tank is set into place. Note: Street & Performance uses color-coded wires to insure the proper connections.