Nice update.

I tried one of the Autozone nut busters (with the chisel, to
be torqued into place) on a lower control arm castle nut
this past summer and got nowhere. Maybe my technique is
poor, though. The Autozone clerk warned me that it was not
guaranteed to work, and I could even bring it back.

I would be surprised if the OEM nut heads were non-metric.

My exhaust system has been worked over so many times (by
places like Midas) and then by myself, that most of it is no
longer OEM. I have had to disassemble the joint between
muffler and cat converter for other jobs a few times now.
Getting the bolts and nuts free is easier every time. I do
keep a tube of anti-seize handy, recognizing that
technically, the torque should be higher when using the
stuff.

"Greg" <centaur99@gmail.com> wrote
>I was able to complete ths job today, so thanks to all who
>gave their
> advice.