I fannied about with a cheap one from ebay, it fitted ok and worked ok, noisier than the genuine LR on though. Downside was that it didn't read the fuel level properly - reserve light came on when there was 20+ litres still in the tank. Swapped it for a genuine LR pump, well worth it, quieter, more accurate and less likely to screw the electrics up. When I asked about fuel pump replacements someone on the forum said that the had used a cheapie and it ended up blowing their electrics somewhere - an extra £400 to fix.