banjomike,
Sorry to hear about the broken mount.
It's not uncommon though.
Thom (Widebody on this board) had the same problem on his car.
Go to
www.vintagebus.com , then select Porsche from the left menu. It's in the torsion bar article (scroll down to the bottom).
Make sure you do both sides, the other one will probably break soon too, especially if you are going with a bigger bar. Elephant Racing sells reinforced sway bar mounts
www.elephantracing.com/suspension/swaybars/swaybarmount.htm
Good luck.