Can I swap Litronics and regular lights between 2 Boxsters ?
 

Is it possible to swap the Litronic headlights from one Boxster S (02)

to another Boxster S (01).

Which means the 'stock' headlights would need to go into the 02 Boxster.

Retain the moving beam?

Easy?

Plug and Play or ????

Yes you can swap them and everything will work except for the auto leveling. If you want that feature, you have to transfer the sensors from the suspension and the control unit (I believe it's located inside the fender).

Instructions for self-leveling retrofit
 

There are several components that you would need to transfer from one car to another.