I have the same car as you (84K), purchased last summer. I have done most of the things you list but also had to have the transmission rebuilt. I lost reverse. I've read that the B2 piston in the transmission is subject to failure and should be replaced, however, when my transmission was rebuilt the mechanic said the B2 did not have to be replaced. You might asks. Apparently, it's now a big deal. When I had the the timing chain replaced I asked that the rails also be replaced but the mechanic said they didn't neew replacing. He did replace the chain tensioner. Still, I worry about the rails.