I replaced my fuel pumps a while back. Not difficult compared to most jobs on these cars.
I was experiencing pressure bleed down after shut down. Isolated leak to the fuel sending/pump unit. I replaced the pumps because it appeared the leakage was related to the pump check valves. Come to find out, the plastic "Y" had a small crack in it and was the culprit.
The pumps are available from nearly all of the common sources. Marc Haibeck has a recommendation as to which one to use, so you might check this out. His recommendations on these cars are well documented as being correct.
When re-assembling, be sure and use hose that is designed for submerged applications. There are 2 different hose sizes in the assembly. 5/16" and 3/8". Use good quality stainless clamps and I would highly recommend using the "Y" that Carter supplies.
Here's a pic of what you will be looking at after rebuild.
z062718-09.jpg