Just did the Litronic upgrade last night on my 01' Boxster. Got the parts from Suncoast Motor Sports in Florida - well packed and delivered on time. Lights including the new smoke corners were $1239 and of course I bought the clear side markers too ($29.95). I did the entire installation in about 2 hours and I'm not particularly gifted with a wrench (I'm a lawyer by trade if that tells you anything

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Removal of the existing lights is very thoroughly explained in the owners manual and I used the article/tutorial from that Pelican website for the new installation and everything was very easy. I highly suggest doing the wiring harness install so that the high beam rotate works - it's a lot cooler than folks described and I swear I can see a country mile with the highbeams on. There are only two wires to splice (simple - just cut with wire cutters and strip and connect with butt connectors and crimping pliers) and the third (brown wire) goes right on an existing ground post - piece of cake. Getting the lights to seat with the tool was a bit tricky until I really turned hard on the headlight tool which produced the audible click and locked the light in place - I was just a bit worried to turn it so hard at first. I didn't drill any holes - just used holes and grommets that were already there for passing all of the wire harnesses through. I get the red/white tail lights tomorrow and I'll be done with lighting upgrades! I also need to replace the rubber "nuts" that the bolts go into that hold the stereo amp in place - I was real gentle in removing the bolts and for some reason the nuts still failed. My car had the higher (15 amp) fuses already installed so I didn't need to upgrade those.
My lights appear to be very well adjusted as installed, and I'm not exactly sure how to adjust them anyway, so I'm just going to leave them for now. I highly recommend this upgrade for anyone who wants a fun project.