Bob's Automotive Machine Shop
We used Bob's in La Crescenta for 6 or maybe it was 7 total head rebuilds on FZJ 80's. (Throw in a Lexus or 2) Bob certainly knows his stuff, and is the machine shop of choice for several Toyota dealerships in the area.
He's a great guy to talk to, and has had his finger in just about every type of motorsport in Southern California. It is worth a call.
818 248 2887 Bob's Automotive Machine Shop
And, I am no pro, just the gofer for the owners.
Dale