First thing I see is it's running lean (blued pipe and tiny bit on muffler). Came from the factory super lean. You may want to rejet.
Also, since it sounds like you already know MC's.... you may want to loose that stock muffler. Very restrictive. Harley Dyna muffers fit near perfect.
At 6.5K miles, you shouldn't have to do much to it other than the standard stuff. Oil and tires.
Also, models number letters changed year to year but the bike is almost unchanged since 1986. Tranny was 4-spd in 86 & 87. A lot of parts from '86 fit the 2012's.
Happy riding. These are fun bikes.
EDIT: here's how mine looked with a Dnya trun-out on it.