Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Yeah, I'd be interested as well. IIRC there are 2 engine spacers, there's a smaller one on the bottom rear bolt. Should be easy to replicate as it's just a doughnut shape.
500 and 550 use different rear wheel spacers Roo, O/S side is certainly different, N/S could be the same. I suppose he'll need measurements of both. The engine space though should be the same.