I've tracked down one hose that may be causing my weird rough idle problems, and that's the hose that runs from the brake power booster and runs to the front of the intake manifold. The portion I can see looks cracked and inflexible around the clamp area.
ETK shows a hose 34 30 1161 513.
I can't find a diagram as to where the other end attaches.
Dug up one of winfred's pics of the intake manifold and circled what I think is the other end.
Is this the correct part number and location?