66 clutch adjuster rod?

Looking to replace a missing clutch adjuster rod for the original setup for the 66 273. All the kits for sale are 67-76 which look a bit long, and big block and B/E body.
I'm sure this has come up before but I don't find any reference to this searching posts. Modifications? options? I am not looking to change the bell housing or upgrade to the larger clutch.