Hi John
It is a little tough to find. I know it's there and I still have to hunt a little to find it.
In regards to the radio style, you may find late 98's with that style radio (with the phone keypad), so keep your eyes open. Not sure if the climate control was changed before 99 or not, I thought it was earlier than that.

A little trivia is that MB actually considers that radio, the one with the phone keypad (Audion or Audio30) " COMAND 1.0"

Gilly