Get 'em while they're hot: new 03-04 Bosch fuel pump assemblies

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Our '03 is beginning to take a bit longer to start.
I had been stopping the key in the run position for a few seconds to allow fuel pressure to build, but that has stopped helping.

Is it possible to replace the tank to get a newer (more available) pump, or are we stuck with this configuration unless we go full wallet dump?
 
Our '03 is beginning to take a bit longer to start.
I had been stopping the key in the run position for a few seconds to allow fuel pressure to build, but that has stopped helping.

Is it possible to replace the tank to get a newer (more available) pump, or are we stuck with this configuration unless we go full wallet dump?
Repeatedly turning the ignition switch to the On position at least several times will give the fuel pump more run time, it always shuts itself off 1.8 seconds after running until you power it up again. You can buy just the Bosch fuel pump itself and install it into your existing fuel pump assembly. What causes a slow start like yours is a leaky check valve inside the fuel pump.