So....I'm a little confused. What is going to be the purpose of the axle once it's annealed? Is it going to be used for something that needs the strength (as in a vise mounted on top) or for ornamental purposes?
We used to have one similar to that at a body shop I used to work at. We would take 8" grinder discs and cut them down a little at a time to get the edge back to save money on new discs. Haven't seen one in years.
Good for you for driving it. What was the original color? Yeah, they don't seem to make great garage art sitting over in the corner collecting spider webs and dust.
There was one thing I disliked about those chassis. The way they had to run the exhaust. Seemed like a tubing nightmare. But that was 50 years ago before they had good equipment. Are you going to drive it when you're done?
Looks like you've done a frame off on the Impala. Wish I still had mine....wife, divorce, you know. But it's nice to still see a few out there mostly original and not totally changed.