Ok, now I am confused. I am going to have my
dash off my 78 300 D this weekend. Just in Case I went to the
dealer to get the 3 yellow vacuum solenoids and 1 green one.
They thought I needed
000 800 04 78 x5 change over valve (these are for a newer year I think)
001 540 86 97 x2 big valve - Do I need these?

I already have the diaphragms for the vent flaps from you.
Any other ideas?