Boxster aftermarket parts?

[johnf]

I am a bit bored with the interior of the car and wanted to get some aluminium parts fitted, handbrake, gearknob etc.
I asked at the OPC here in glasgow and was told it may be about £700 for the brake and knob!!

Does anyone know if these type of parts are available aftermarket, and, vitally are they easy to fit yourself without destroying the car?

Thanks guys