vacuum hose help for an 1981 malibu a/c and engine

[malibuya]

I need a little help to get this right
motor is a 99-2000 vortech 350 with air gap intake and 1406 carb
I have the pcv hooked to the front per edelbrock
what are the 2 other fronts for?

I have the brake booster to the back of the carb
need to know where is the best place to hook up vacuum advance distributor
and what else should be there???

secondly car is missing the a/c and heat vacuum hoses and blows only out the defrosters
what color are they on an 81 (still purple ac and yellow heat like my 87)


any help is greatly appriciated and once i get this all together what should my vacuum be at idle????

 

[79loserbluebu]

The vacuum advance should be at the front of the carb as well. The heater vacuum lines are purple and gray, per my 79.