Newbie with ignition question

You have properly identified the part. I was over at the mechanic's garage today to look at the part and you have it nailed. Its the black one on the right on the driver's firewall. Apparently it controls the choke. It seems to have melted. A picture of mine is attached.

I need a replacement in order to have the mechanic finish the job. Don't know about the catalytic converter, but it does have "Unleaded fuel only" on it as you describe.

Would really appreciate knowing where to get it replaced, since it is holding up the general repair process. There is no issue with Maryland because it is registered as an historic vehicle and does not require a state inspection.

Thanks very much again. Steve