I agree with Jon and would guess somewhere between 10-13k. However, the question was "what will it bring on eBay?" not "what is it worth?". In other words, eBay is probably not the best way to get top-dollar (or even a fair price) for your particular car, due to the sight-unseen nature of the venue. That said, you can't beat the exposure-to-cost ratio, and might generate a few leads. Anyhow, nice car, and good luck!
Oh, and just a side note:
Turbo valve covers were standard on all Carreras.
