One SC I had was getting hard to start. Then it finally just didn't start. This took the course of a couple weeks.
Another SC was just dying intermittently. I would be cruising at 30 mph, then the car dies. It would sometimes start right up, sometimes not. That wasn't a fuel pump problem, but was a melted harness that the fuel pump connects to.
I don't think fuel pumps take very long to die. Most times they are fine, then one day just aren't fine anymore.