a little more progress, got the new muffler today so now I can get started on making up the rear sets, I bought this bike in boxes, and not knowing much about them either, I did not realise that the brake operation was on the opposite side to the brake lever, pretty dumb system imo, otherwise I would have looked to fit a different hub, anyway I have pretty much worked it out in my head and will get about fabrication in the next week or so. I'll update with more pics as it happens.
I also discovered that the brake spindle is too big for the hole in the swing arm spindle so I am on the look out for the correct one.
here is a pic with the muffler in position.