Quadraject Vacum Line ?

[Shugalou]

Hey Guys,

I'm still getting familiar with this truck (78 stepside) and while I am getting ready to rebuild the carb (first time for me) a couple of things caught my attention.

One of the lines is plugged, in a hack job sort of way and the other looks like it's just open - should the open port be plugged as well?

I also noticed that one of the return lines to the emisions canister is cut I'm guessing this was done to improve performance? Does it effect the reliability in any way?

Thanks