[Kan-O-Z]

I am really leaning towards an '03 Boxster S. Please help me out with what options are available and what you think are most useful. From my limited knowledge, this is what I think I am interested in.

PSM
18" Wheels
Xenon lights
Power Seats
Heated Seats
Memory Seats
What is sport package?

Is traction control part of PSM? One stops rear wheels from spinning whereas the other will stop your car from losing control from what I understand. Do you think PSM is a good option. Also if a car doesn't come with PSM, is it hard and expensive to install?

Are these standard?
Anti-lock brakes
Side Airbags

Please let me know if you have the answers,

Kan-O-Z