Wanted to say thanks for the tip on the availability of the Voltage Regulator.
Saved me a bundle on my 01 Boxster. The VW dealership had a little trouble cross-referencing the Bosch number so here is the VW number for anyone who needs it. VO38-903-803-EX. Cost me $98 in Toronto. Also regarding the removal of the alternator which can be tedious, make sure you free up the bushing at the back of the upper bolt. You will have to get to it with wd40 and wait. It needs to be backed off to give the required clearance to rotate the alternator to clear the bottom mounting. If you do that, the re and re is quite easy.
Alan