The Motivation:
One thing that bothers me about our '82 300TD is that it does not have the brake pedal interlock feature of more modern cars. The reason it bothers me enough to consider doing something about it is our toddler. He loves to play in and around the cars. Most of the time we remember to set the parking brake; but, he's a clever kid, and someday, he'll be strong enough to pull the park brake release.

The Idea:
Replace the stock W123 shifter with one that has a brake pedal interlock, such as one from a W124. Has anyone ever done this? Are the transmissions the same/similar enough? Anybody got a better idea?

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Remember, Safety Third!
'99 E300 Turbodiesel, '82 300TD, 1996 12V Cummins Turbo, '94 Neoplan - Detroit 6V92TA