The muffler and the pipe were too unwieldy to stay inside the tote I was using for electrolysis.
I ended up just cleaning with a wire brush and painting


My I did my half shafts, calipers, suspension springs etc with electrolysis, it worked great.

A couple of parts I couldn't do with electrolysis were subframe (too big to fit) and differential (it probably will rust inside if the water gets it.

I tried sandblasting the differential but it makes too much mess in the garage, I might try find someone who can do it professionally.