Vacuum lines

[jon.fyock.7]

85 c30 454vid in the process of removing the double smog pump set up.can I use a vac schematic from 80 81 or do I have to go earlier.should be distributor,pcv,breather flap,exhaust flap .am I forgetting anything ? What vac ports to what? Any comment appreciated.

[zieg85]

Don't quote me but I think I remember reading where one is a smog pump and the other is part of the EGR