If your brick pump is still working and delivers a steady stream of fuel I would not replace it. They do have a long life.
The brick pumps linked to above are good. My only advice is to follow the instructions that include a step to mount the pump on a 45 degree angle. Supposedly that improves their life but this is hearsay... not personal experience. What is personal experience is that they are noisy as Kurt said. However, rubber mounts will make it quieter inside the car. Once you are off idle you are not going to hear the pump anyway.
Steve, the 40163 (2/1.5 PSI pump) would be fine. The 2 PSI is low but not "too low". If concerned, or you want slightly higher pressure, look at the 40178 pump (3.5/2 PSI). You don't want anything higher than 4 PSI as the max pressure or you run the risk of overpowering the float valves in SU carbs. I believe Webers can handle higher pressure. Of course, you could run a higher pressure pump and use a regulator right before the carbs to drop the pressure. Do NOT use the round, pancake regulators sold under various names. Use the low-pressure Holley regulator which is more reliable.
The other pump style mentioned by Kurt is generically called the Gold Top or Silver Top pump. One series has yellow zinc plated end caps, the other... white zinc. They are a more sophisticated pump, cost more, and are larger. They have a screen filter built into the suction end of the pump. They are quieter but cost about twice what the brick pumps cost. I have used the brick pumps on our GT6 and Mini, the Spitfire has a silver top pump.