Comfort
1" high density foam in the seat. Next, fine tuning control position.
Power/sound, none. Going after power costs more mileage than I'm willing to give up. Sound, I prefer quiet so as to draw less unwanted attention.
Looks, relocated the license plate to right under the taillight, trimmed fender level with bottom of license plate. Can't be bothered beyond that.
I am thinking about repainting because of the various nicks, dings and scratches to the paint from normal wear and tear. My next door neighbor is a professional custom painter and owes me some favors.