Originally Posted by bpeckm
The stem bearings are cross-referenced to pretty much all airheads starting with the /6 series. The actual top- and bottom units are shared with the R65 and the G/S, and vary only by some minor fasteners (for the R65 and ST headlight assembly).... but .... is it the same bottom/top dimensionally?
Anybody care to throw out their thoughts on that?
You are correct that they are the same. If you plan on doing a lot of off road it would perhaps be best to look at all the people who have done some really neat conversions to ST and G/Ss. As well, the front suspension is not the best (even by BMW standards).
For myself adding a Toastertan top plate, http://www.pbase.com/toastertan/top_braces
and Racetec (the US company) emulators was enough.
If you use the TT top brace you will need to add two holes for the headlight mounting bracket.