Even if you use a different pump, pumping hot fuel is going to be hard on it as opposed to cool fuel. Hot fuel is easier to cause cavitation in and that leads to the noise and higher wear in the pump. The fuel lubricates and cools the fuel pump. If it pulls in air or cavitates it increases the wear on any pump. Keeping the fuel cooler is the objective, not trying to get a "better" fuel pump. Some pumps may be more forgiving of cavitation and wear but it still is not a good situation. Insulation can help reduce heat transfer from the water pipes underneath. The air dam can reduce the hot air from the radiator and finally you can wrap a coil of pipe around the A/C accumulator to remove heat from the returning fuel. Once the pump gets noisy it is only a short time till failure. It also seems to get noisy when you don't have a full tank. I think there are 2 reasons for that. One, more fuel will take more heat to get hot (more mass) and 2, the pump is submerged so the noise is muffled, the pump is cooled, and the fuel is less likely to cavitate with a little bit more pressure from the fuel above the filter. Depending on your local climate, you may have to take more steps to minimize the problem of hot fuel. On most fuel injection systems the pump in the tank doesn't work very hard. All it is supposed to do is move the fuel out of the tank to another pump which puts the fuel under high pressure. In the Bosch K-Jet system the tank pump does it all and to a very high pressure because the fuel injectors are mechanical, not electric.