Mk1 V8 Disco Fuel Pump Leak

Just put my Disco tank back in. After rebuild. Connected feed and return pipes to pump in tank and leaks like a good un. The two pipes that come out of the top of the pump are really corroded and I think beyond repair. Priced up about£180 for new pump. Can't afford this. Does anyone know of one that is cheaper or second hand or how about some sort of conversion to an externally mounted pump. Desperate needs to be on road and MOT'd by Monday/Tuesday./
Thanks
Glyndwr