Really nice car.
As someone who has bought and sold, and bought, at the end of the day a car is only worth what someone is willing to pay for it.
The modifications, typically, are pennies on the dollar. Just as many people won’t appreciate them as those that do. Consider them a selling point should the buyer be considering a like car. But they aren’t going to move someone to buy and may stop some like myself. My first thought would he how to undo some of these to get it back to stock if I were buying.
The configuration stuff is nice to know but again these cars aren’t old enough or valuable enough for it to be a motivation to buy. Lastly it’s unfortunate the CSM number is on the airbag cover. It’s likely you could get more for it on the open market than with the car if it were just the signature. I would again consider it a buyer incentive. I would keep it or try to sell to buyer separately. Do you have the old cover?
You’ve taken great care of the car, no doubt, so keep a watch for what others are selling for and price accordingly. Knowing that at the end of the day none of what you said above is going to get most buyers to pay more, where some wouldn’t buy at all, it sucks. It’s your baby configured just the way you want. Finding someone that agrees with your vision with the same passion converted to cash is VERY hard to find.