Spend the money and buy a Gerotor style pump, not a rotary vane pump like the low end holleys. Accel and others make them. Holley also makes a Gerotor pump. Guess what, they are more expensive. Use a 3/16 rubber pad behind the mount and it will be pretty quiet. If you want the best performance then run a 12-14 psig pump with a bypass regulator and return line to the tank. You only need 8-9 GPH flow per 100 HP. The fuel itself does no work so any extra you use turns into heat. That's why many people experience short lives with non external bypass pumps.

Kitz