[Perfectlap]

Those are 17" stock wheels for the 2000 Boxster S.
Visually, 18" wheels would make a huge improvement with aero treatment.
I was expecting a whole Tech Art bumper and not just spoilers. So maybe they
add a little less than I thought originally. But with the painted bumperettes, and
everything else that has been painted to match, I would add at least another $1,000 - $1,500.
I think it shows that the exterior and interior has been well looked after.

The value in this car is the low mileage, good paint condition and the expensive Litronic headlights. The other modifications add a little more but I wouldn't let the seller push them as a huge increase in the value over another Boxster S with similar mileage. If the car had a lot more mileage those modifications wouldn't be pushing the value up considerably higher.

I would check the Excellence Magazine buyer's guide to see where they price a 2000 3.2 in tiptronic with mileage that low.

p.s.
How much mileage are you planning to add to this car each year?