[Bfan]

I to have been doing my own setup as I find that you need to adjust it all the time for track duty.
I have actually modified my kart equipment to fit the Boxster's wheel centers. But some kind of skid plates are necessary to get accurate alignment. I made a pair out of four plywood peices with couple of plastic sheets between them to make a slippery platform for the car to stand on while I make adjustments. It turned out to be so slippery, that I could not get the wheel nuts off (well, I have studs), while the car stands on those home made skid platforms.