Well, after having the fuel pump quit on me twice, I took the plunge and replaced it, along with the wiring and hoses. That meant getting the tank out as the old pump (a Facet solid-state one) had been wrapped in so much sound insulation that it was no longer possible to remove it through the factory inspection hole in the front bulkhead. My local specialists took pity on me and let me use one of their several lifts so I could work underneath the car more easily. Phew! I'm too old and non-pliable to work under a car on axle stands...
Anyway, all went to plan – I've mounted the new pump under the car next to the steering rack, so it's now accessible without taking out the tank. Why VW/Porsche didn't do it this way in the first place baffles me. If it was good enough for the 911, etc... The pump is one of Facet new-style solid-state jobbies, which is encased in nylon and incredibly quiet (unlike the old metal ones, which rattled your teeth).
When I removed the tank, there was a load of insulation material piled in one corner, with some husks... Yes, it has been home to a mouse. I hope I wouldn't find the mummified remains of said rodent, but alas, I did. Poor thing. But the little bas..., I mean, the poor mouse, had gnawed at both the earth and live leads, before dying. The pump was also rusty and the fuel filter had been screwed in to the wrong port by whoever installed it back in the '90s...
Fingers crossed it's all fixed now – having a pump crap out on you is one of the most annoying things in a long list of annoying things.
In the first picture is little Mickey – the ex-mouse. The second shows Mickey's home and the great wad of insulation that had been wrapped around the old pump to quieten it...
Mickey obviously liked plastic... And the insulation had made sure the pump stayed nice and damp at all times...
Old pump with filter on wrong side... Finished apart from refitting undertray. More accessible and a lot neater all round.
Almost. 
