I have no idea why people do this stuff to a nice car like a Rover P5. It isn't my car though.
> Start somewhere, and the more you do, the more you can do.
Obviously. But I had to do a lot of stuff that I wasn't prepared to do far quicker because the previous person who doing this took short cuts. I almost had the dash catch fire because someone did a bodge job on electricals instead of paying £15 for the correct part (a plastic plug).
The point I was making is that you are making it sound far simpler than it actually is. There been a good few weekends that have been sunny and I have honestly felt like I was wasting my time and couldn't face working on it.
I had to fit a new turbo and it took me about 3-4 weeks. Not because it was difficult (actually it one of the easier and nicer jobs IMO), it was sourcing parts around the turbo such as gaskets, copper washer kits and other dumb stuff like that.
There was constant trips to tool shops because I was always missing like a tool, trying to find a fitting/gromit in Halfords (they never have it) or a parts supplier 40 miles away in the sticks. It all adds up in both time and cost.
Now I know roughly who the order from, what I should order from etc. But that is going to be different for almost different manufacturer and worse if the stuff is more niche/custom.
The amount of the projects that get given up, suggest it not that easy.