Hi, I've been looking for one of these too. I'm sure there's a company in the States that sells them new but I haven't found it yet. Maybe someone on here could advise?
You can only buy aluminium ones new not the original steel ones .... Do you want steel ? They were steel because of the smog pump fitted to US busses ....
I've goat a steel one on my US bus but all the marks have worn off Put a plastic one on; Ratwell refers to plastic one so I guess they're Kosher if you worry about such things.
The problem I have with the black plastic one is seeing black numbers on a black background. perhaps I just need some new glasses!!