I am not a professional mechanic. I am kind of a shadetree/driveway mechanic, so don't take anything I say here as the Gospel. These are notes, comments, and information I've found to be useful and think others may as well.
That said, I'm a small-time specialist on this car simply because I've had to be. Some things (the tranny rebuilds) had to be done by the pros. But a lot of smaller things, like replacing the brake vacuum tank, working on the ignition, replacing the fuel tank senders, and the head gasket, were things I had to do myself because I'd go broke sending it to the shop every time something happened. The car bleeds my bank account badly enough already.