In the continued saga of my 1993 Impreza LS, the fuel pump crapped out for real this morning (cycling the key on and off repeatedly did nothing) so I ended up having to swap it. I haven't fastened down the carpet since the last time I looked at it, so it was a fifteen minute job or so. The replacement is from a 1995 (IIRC) Legacy, but pretty much all Subarus use the little JECS canister pump also used by Nissans and such and only earlier, FWD Subarus have less displacement (and thus presumably less fuel delivery) than my '93 LS. This swap is even easier than on (for example) the 240SX because Subaru uses a slick connector for the fuel pump and sender. This connector, which is male on the outside, also has two male connectors on the inside, into which the sender and pump plug separately.
This means that you don't even have to bother to unscrew the wires from the terminals on the pump; just unplug from the connector. One bolt holds the bracket onto the bottom of the pump; remove it and the pump comes free easily. Much easier than Nissan. Also superior is the fuel tank sealing hardware. Older Nissans use a silicone O-Ring that swells over time, meaning it must be replaced. Subaru uses an oval-shaped gasket through which the cover bolts actually pass, aligning it.
All in all, I give Subaru top marks for making this not a pain in the ass.