I apologize if this subject is already covered somewhere else in this site, but I can not find anything on the matter in the search.

I am wondering what the minimal vacuum lines needed to make my truck functional are. I can not afford to replace the OE lines and fittings, it doesn't require a thorough inspection because of its age, and why have it if it doesn't need it to run, right?!

At the moment:
1) I have the transmission, cruise control and brake booster vacuum lines connected straight to the main vacuum tree on top of the engine
2) The distributor connected to the front of the base of the carb
3) The choke connected to the back of the base of the carb where it is from factory
4) The large vacuum tube off the back driver side of the carb is capped as are every other tubes remaining.

Here is the carb with the tubes coming off of it.
1) To distributor
2) Base of carb capped
3) Side of carb capped
4) Choke to base of carb (like factory)
5) Tube from top plate of carb nothing
6) EGR nothing
7) Large tube from base of carb capped

Which ones can be capped off, which ones need to be connected and where? Thanks for any help/advice

 

Here is a hand-drawn vacuum diagram like the one that was under the hood.

 

Is what I have good?