Edelbrock performer carb - vaccum lines

[Elpresidente]

So Ive got myself an Edelbrock 600 performer carb, and it has 3 vaccum lines on the front -  a ported and unported vaccum line, and a larger one in the center that im not sure of.
Which lines on the vaccum canister in the truck would be ported/unported? and where would the center connect to?

[jaredts]

Ported to vacuum advance on the distributor if you want to stay like stock, non-ported (manifold vacuum) if you want a little more performance curve from your advance.  You can do some searching on that and get up to speed.  The big one on the bottom to pcv valve.