In the tank or on the frame on a 92 5.3?

 

The 92 model year has the pump in the tank.

 

....and it's a pain to get out and very difficult to get the right replacement. Your car (and mine) are strange animals that only ran for about 18 months (post facelift to 6.0 V12 introduction in 93.5 model year). My excellent indy mechanic had to basically take my whole fuel tank to the Jaguar Parts counter and try and work out what pump was in the car. They eventually got it on the third try

 

As we can see by following threads, I haven't had a fuel pump issue. The coil wasn't producing enough spark to ignite the fuel, which I didn't know. So I just keep priming it, then running the car, until the fire. We won't go through that again.