Since we're on shift knobs....I just installed the silver horseshoe boot on my shift knob for a different look. Like it a lot:
Got it from this place that sells a lot of cool shift knobs. No affiliation, just a satisfied customer.
997 Turbo style knob on 986 style boot:
http://www.carnewal-europe.com/cpx_p96201.htm
Techart style knob on 986 style boot:
http://www.carnewal-europe.com/cpx_p96105.htm
997 GT3 style shift knob on 986 boot:
http://www.carnewal-europe.com/cpx_p96191.htm