Thank you for your help.
Is this for an 87 300E? My V7 Switchover valve unit(I called it a manifold) has only 6 numbered outlets top to bottom.
It also looks like there are two fresh air diaphrams(#42) and I think I only see one diaphram when I took out the glove box(likely #38 or # 42) so I will have to pull the dash if this vacuum function diaphram is correct?