There is a little shop almost walking distance from you that most people don't know about. RMG enterprises specializes in aircooled porsches and they used to be a referral only shop but stop by and see Bob if they are still there. They did the transaxle in my 911SC when I lived in Cupertino and did a great job, the problem was they went through the whole car and fixed everything else and although the price for the trans rebuild was on target I wasn't expecting that big of a bill for everything else! You will not hear a bad thing about him from anybody.
In Sunnyvale on the corner of El camino and S Mary ave there is an El Pollo Loco r and an alley behind the other shops(used to be a strip club there but I know nothing about the place despite what they might say inside!), drive back there and keep a sharp eye out because it is hidden well. Bugformance was next door but I think they are closed. Don't call him, he never answers the phone, but will talk to you if you just stop by.