I just measured the painted wing and associated hardware from my 992 body and it was just under 12 grams. At silver can speeds, I really don’t think there’s going to be any aerodynamic benefit, so if you want to save the weight, you might as well leave if off.
I competed in a 4 hour TT-02 enduro a few months ago. The rules were basically box stock TT-02s with some minor allowances for durability (bearings, plastic Tamiya oil dampers, etc.). It was amazing how close the racing was. Between 1st and 2nd it was 3 laps, and between 4th and 5th it was 1 lap. It was critical you had a good battery swap strategy and process. Also, over the 4 hours, multiple cars had assorted broken parts. It was important to have spare parts / tools ready to quickly get back out on track.
They also had the coolest trophies!