Fuel tank problem

If your filter is in fact, being clogged up by rust etc, then the pump sock is also probably saturated with it.

What trouble shooting have you done?

What's your fuel pressure?

What does your filter look like?

Is there crud making it's way to your fuel rails and injectors?

Is swapping out the fuel tank one of the solutions on your spinning wheel dart board?

Have you disconnected the pressure line from your fuel rail and pumped fuel into a gas tank? What's it look like? Is the pump strong?

Hearing a pump prime itself when you turn the key is not proof of pump condition.

I think that you should disconnect your pressure line from the fuel rail. Jumper the fuel pump test connector and pump as much fuel as you're able into gas cans. You can check the color of the fuel and see how well it's pumped out.

Drop the tank (now nearly empty) and pull the pump. Look at the sock and replace if necessary. Look inside the tank and see if it's full of rust. If so, get some fuel tank restorer and follow the instructions on the can.

Before doing all of that... you need to get a fuel pressure reading. Get a direct reading gauge. Once the pump stops priming, the fuel pressure should bleed down relatively slow. If the needle drops like a rock then either your regulator is bad or your pump is by-passing internally.

If your filter is clogged, and the fuel is rust in color, then you will also need to have the injectors cleaned or replaced.

If your tank is rusting; there are a couple of things to be mindful of:

Don't allow the car to SIT for extended periods with a partially full tank
Don't run E85 fuel
Avoid gas with ethanol when possible
Don't get gas at stations where a fill truck is delivering
If you live in an area with widely varied climate, fuel dryer every couple of months is a good idea
Use fuel stabilizer in a full tank when letting the car sit for extended periods