Approx 165k miles on a stock CX pump and it ran a '95 B18C1 just fine. I think most people who benefit from upgrading to a GS-R pump from a Civic one only see a difference because the Civic pump was on it's way out. I haven't seen any solid data (IE factory specifications or actual flow tests) that the fuel pump in cars with DOHC VTEC cars are any different from every other Civic/Integra. It seems to be a pretty common assumption (and logically following what's usually done with those cars) but I haven't seen any data proving those pumps are more efficent. If your concerned about your fuel setup, an adjustable fuel pressure regulator or something like a V-AFC might be a wise investment if you have access to a dyno to tune with.

By the way, nice sig white n slow, I just noticed that.