To buy a newer year or a lower mileage boxster: That is the question ;)

[Perfectlap]

I did Autocross that Miata with Porsche Club, BMW club, the former M Club and SCCA. I kinda stopped autocrossing because of the time committment for the limited running. But the Porsche Club was always the best in terms of low turn out (more runs).
I don't reall autocross with Boxster. I had Toyo RA-1's and some of the lots were so dang rough they just shreded the tires. I kinda wish I had held onto the Miata as an autocross only car but I don't have the space for that now.

As luck would have it i was in the market for a silver and red Boxster S with low miles and that's exactly what pop'd up on Ebay. I was watching Top Gear and they were doing a show on the Boxster and how it was the best sports car for the money just days before. The Ebay car was being sold as a trade in by an Acura dealer in Montclair with barely 10K. Car was mine a week later.
The HID or Litronics in Porsche speak, comes from the factory as one whole unit.
You just use a special tool found in the tool kit to loosen one bolt and out they come. Like changing tail lights. A few have experimented with replacing the bulbs with other High Intensity versions but it's not really the same. Also the Litronics units have no amber on them, completely clear. I picked up the Litronics in a group buy with Brandywine Porsche for $1,100, before the Euro took off. I don't think you can touch them for less than $2,000 now. pricey.