When I rebuilt my 500 engine, I had it all spread out in one corner of my flat sitting room, laid out logically on the floor boards ready for reassembly, the small bits in tins and jam jars, labelled. I didn't have a workshop or indeed a camera in those days but I did have a Haynes manual. The engine took up quite a large area but it was handy to be able to see it all every day and stay familiar with progress. My girlfriend, now my wife, was not at all perturbed by this which looking back surprises me somewhat; it should have set all sorts of alarm bells ringing. I managed to get the whole thing dismantled and reassembled within a week or two, in the evenings after work. This was in 1995 and it is still running now.