I need to put together a fuel system and I'd like some advice on the components. 540 ci, single 4150 carb, max hp 700. I need to use an electric pump, a bypass regulator and need a spot for a mechanical pressure gauge. Things I've noticed and questions I have-
1- The Mallory marine kit that a lot of people recommend doesn't have a bypass regulator and the kit that does have a bypass regulator doesn't seem to be approved for marine.
2- The black Aeromotive marine pump seems to be overkill for my engine.
3- Weldon is probably out of my price range and also flows a lot more than I'd need.
4- If I get a carb inlet line that has the provision for a gauge I could get a regulator with one less port. Not sure which way to go here.
5- Although most manufacturers seem to suggest a 140gph pump should be used, I notice the Holley Billet (not marine approved) inline pumps claim to be able to support this horsepower with a much smaller pump. 60-70gph?
6- I'm hoping the filter head/ water separating filter I already have will be adequate flow wise. It came off a Innovation Marine/ KAAMA engine package.
So, how about some help in putting a system together. Thanks everyone.

I run a Aeromotive pump, regulator w return(at carb), filter before pump, check valve after pump then filter/water seperator.

Not sure how I overlooked it before but it looks like the Aeromotive 11211 might be good for my needs

Aeromotive products are not inexpensive though. Plus fittings its not a cheap install. I can say its still running after about 7-8 years.

Inexpensive compared to weldon. What model do you have?