Congratulations Dave,
Welcome to the great state of Texas! Be prepared for a few:
"Ya'll got one of them thar PORTCHES, huh?"
Your car is about to be worth 3-5k more, though. (The selection of PCars in general is pretty low here.) As to any "action" I don't know the Austin PCA regions name, but I do know that they share venues and many events with my local Region, "Lone Star".
Lone Star has a DE every 3 months, the next one is Sept 7-8 @ Texas World Speedway, the one in College Station Texas, (about halfway between Austin and Houston).
Check out
LSRPCA here. You are moving to one of the neatest areas in the state, Austin is fun, and the hill country in general has alot of fun roads.
Good Luck,
Botman
BTW: Fix, or re-install your A/C now!