[deathpunk dan]

916 based (and the 99+ SS models as well) bikes benefit GREATLY from bar risers. A good set of risers won't turn them into VFRs or STs, but will make them pleasant to ride for more than 50 miles.

Keep in mind when dealing with older ducs that 2v 750/800 and 900s are totally different engines, not just pertaining to displacement.

The 900 has the classic duc dry clutch whereas the 600/620/750/800 are all derivatives of the early 80s Pantah line, with wet clutches and in the case of the 600 and 750, limited aftermarket perf gains if you are not happy with stock or minor mods.

The classic bevel drive 900s are very expensive. Figure $10-15k for a 78-82 900SS, right?

Danny Ocean's 750 sport is a completely different animal than the softer 750SS that came out a year or 2 later. The 750 sport was a pretty wild bike, extremely rare, and in a much hotter state of tune. It may have the same bottom end as the 851, I can't remember.