WTB: fuel pump. early in tank transfer

[rede30]

I need an early model in-tank transfer pump. let me know what you have.

[Gaboer]

What's the differences between the early and late model fuel pumps? I've got a '90 318i fuel pump

[packratbimmer]

Early cars had a high volume low pressure pump in the tank and an external high pressure pump.

Late cars have a high pressure/high volume pump all/in/one in the tank.