I have mine mounted on the inside of the rear frame rails along side the fuel cell. I have filters mounted to the rear frame crossmember between the cell and pumps. As you can see the pumps are lower than the cell, so I have gravity feed. I have the relays inside the trunk and run the main feed off the battery cut-off switch. I have the switches in the dash and plummed through the oil pressure cut-out switch (Holley if I remember correctly). It only takes about a 3 amp fuse for at the switches. Wire it as safely as you possibly can!