I mounted mine to the back seat bracket a little above the gas tank.I insulated the back seat under and behind it.The pump is not in the trunk.I had a holley red way to loud.I put a edlebrock #1791,you can hardly hear it.Once the car is running I don't hear it at all.I'm very happy with this pump.I do have flomasters super 40's so they are little loud.good luck.