That price point Marshall guage is not stainless shell. As with any chrome guage, it rusts fast. I've used a bunch of them. Have had a few go bad out of many used. Not a bad cheap guage overall.

Liquid Filled guages where a fad. I was early in with that fad and early out. LOL.

I'm trying to ask you what do you use . Do you have a favorite for accuracy and dependability . The ones I have used were junkers .

When I use an electric pump I mount it in the bildge under the motor. If there isn't any thing to mount the pump to I just glass down a piece of wood and use some short screws. When you mount the pump above the gas level it causes the pump to over heat and it looses its tolerances it will still pump fuel but when there is a large demand it can't keep up = low fuel pressure. Once you over heat the pump one time it's done it will never be right again.

Honest ? Not really any. I prefer to run Electric Guage of your choice in dash. Temporarily install mechanical screw in guage (known to work) to see what psi it reads and then install electric psi sender for guage installed in dash. Note the difference.

When, and if, electric guage reads different or acts weird, remove sender and install known good screw in guage to determine if issue with electric one or not.

I've had most all screw in guages break at some time or another (in boats especially and race and/or serious street cars) , not too mention, you can't read them when at WOT and top speed.

Just my single person experience.

That's what I was looking for . Thank you .

These are reasons I don't like electric fuel pumps for most applications. Your basic marine engine, carbureted, even with the mercury sea pump/fuel pump deal, is more than adequate. If you have a block mounted pump, an old fashioned 6 valve style pump that cost less than 150 bucks, with 1/2'' NPT inlets and outlets, will supply 1000HP all day with carbs, and last a long time. The standard merc sea water pump mechanical will also move a good amount of fuel.

Some guys assume electric pumps are the way to go, and that they are gonna get some sort of performance enhancement from adding them. If you have fuel starvation issues with most mechanical pumps, its usually not the pump itself, but the line size, pickup size, etc.

Only time I would want to go electric is with something like a Weldon, aeromotive, with a return style regulator, on high power stuff, or EFI. I have no use for those BS holley blue/black pumps with dead head regulators..

Good advice on mounting the fuel pump below fuel level. I would install a shut-off valve just before the pump if you don't have one already. If your pump starts leaking or you need to swap out the pump, a shut-off valve will come in real handy.