Vacuum Lines from intake manifold

[KlausMeine]

Does anyone have the schematics for this vacuum line? I've always assumed it's the brake power booster vacuum line but can't seem to follow the trail. I believe it goes into the tunnel but seems too big for that. I identified a vacuum leak on cylinder 2 coming from this line. Any ideas how to replace it? It's a '79 911 SC with 46mm PMO carbs.

[pmax]

Yes, goes to the tunnel.

From the engine compartment to under the chassis snakes around the "top" (or bottom depending on your perspective) to a tube in the tunnel, all on the driver's side.

Pic in this thread below from Mr Walker himself.

https://forums.pelicanparts.com/porsche-911-technical-forum/435952-vacuum-leak-you-probably-didnt-ever-think.html

[KlausMeine]

Thank you so much for your response. It's good to know I'm not alone with this issue.