Thank you everyone. From what I see so far:
K&N filter (I ordered a Ram Air last night)
Pullback risers
Gas gauge
Drivers backrest
Progressive suspension up front, not sure yet about back shocks
He gave me all his paperwork since buying the bike new. It lists the valve clearance checks and what they changed, leaking fork seal
fixed with Progressive suspension components added.
...and more I'll look at tonight.