Sadly I don't believe you will get much of a break on labor $$ especially in the Bay area. I was happy with the product that Tom Amon sold the nose bearing seal sleeve, which my mechanic put in. I've heard good things about him!
I don't know if you have checked his website
PORSCHE REPAIR SERIVCES - TOM AMON - Welcome to Mobile Works West!
However, I'd give him a call and talk with him about your car.
Best of luck!