$17K is on the high side for a 2000 with less than 50K miles, a hard top, 18" wheels, Litronics, and Carrera front end?
I don't know if you've taken a look at the Boxster/Carrera market but sure the prices have bottomed, but good luck finding an enthusiast owned model. Most of what I have seen looks well worn with the mileage to prove it or if its garage queen material the owner is just sitting on it, no point in selling unless he needs the caysh.
Any less than $17K and I'll have to buy me a second 986 strictly for autocross/track duty.
p.s.
if the prospective buyer asks about the wheels, you are going to point out that these are not factory issue right?