Am I missing a part????

[rwthomas1]

Okay, heres a weird one. At the last gtg someone noticed that my car, '84 300D, doesn't have the black vacuum switch box on top of the valve cover. Seems everyone elses car had it from the earlier models through an 85. The car runs fine, shifts well, smoothly and at the proper intervals and the downshifting works too. Nothing I can see is disconnected in the vacuum system. So the questions is, am I missing this part? I figured my car was different since it is an original California car..... I'm just curious about this, I'm not planning on installing the black box as the car drives just fine as is. Thanks, RT