Finally got around to changing my fuel pump to the Walbro yesterday, and I want to say huge thanks to Bunny and Planenut for the excellent instructions! Everything went smoothly, and so far my car is running great.
As others have mentioned, the only hard part is getting the black plastic cover off. The black mastic that Morgan applies is really hard to get off, while at the same time you are trying to work out how the smaller cover attaches, so the process involved much swearing. Having done that, the larger cover was jammed between the top of the pump and the wood frame and was hard to extricate. I ended up trimming it to get it back on. There were a surprising number of fine metal flakes in the bottom of the bucket, and embedded in the little filter on the foot of the pump, although the tank itself looked clean.
Fitted an Antigravity ATX20-HD Lithium Ion battery at the same, to fix another design weakness, and now the car starts noticeably more quickly.
