Thanks Charlie.
I didn't know about the Timevalve site. I took a look...interesting. Stock will work for me. If the car lasts another 30+ years and I still have it, I'll be entitled to an award and/or free admittance to a place for people with serious problems!

As you did, I plan to replace everything from the down pipe back. I think that Ansa is the likely candidate. About $300 for both mufflers including tax and shipping. Not bad.