I've seen balljoints shear during race conditions. Even the larger later model joints. I like the idea of relocating them so the arms are parallel-- but I'm not so sure I am sold on extending them...
just my $.02
What kind of racing conditions??? I know (and race with) several people that race A1 VWs in SCCA (ITB, ITC, HProd) and I have never heard of anyone shearing a ball joint from stress. And these are some fast cars w/ very sticky tires.
Bill, The ball joints I saw sheared off were in Vince Lociciero's shop. At the time he had quite a bit of race hardware laying around from all around the country.
I'm unsure of the class, and I hesitate to say GT4, (since I did NOT see the actual race) but I DID see the aftereffects. Face it, VW engineering must have had a concern with stresses too as they upsized the STOCK balljoints during the run of the Rabbit.
Sure, there is an advantage to correct geometry-- I'm just cautioning that you may want to think twice about how you go about it. Extending the shaft of a ball joint (as a few of these designs do) MAY not be the right way.
As usual YMMV.