I'm sorting through the vacuum system on my recently-acquired '76 245, and came across a few issues. First, just as an interesting aside, this car appears to have come from the factory without EGR. The EGR port on the exhaust manifold is blocked off, but it still has the EGR system vacuum amplifier and actuator valve. Probably major vacuum leak sources, so I eliminated them.

Here's the main issue. When I got this car, the vacuum line was off the distributor vacuum advance servo. Where does it go to? Does the distributor just get straight manifold, or does it attach to that weird little device on the bottom of the intake with a knob on it? That's where I have it now, but I'd like to get it right.