Got an Edlebrock AVS2 carb and put her on the truck. Immediately solved my vacuum, and idle issues. She was idling at 500rpms before I upped the idle a bit. But that's crazy to me, since before this new carb, pretty much anything below 950rpms risked the chance of her dying. Granted the 500rpm was pretty rough, but i upped it to about 850rpm and she smoothed out. She's currently timed at 8 degrees, so now that I can idle her low I'll have to go play with that.
Another note to make is that the fuel pump started spurting gas out the side a day or so before the new carb came in, so I replaced that too. Had to actually saw off the metal line attached to the old pump. Which was okay since I was going to have to do it anyways for this carb conversion.
Took her out for a single short drive and everything seemed great, so we'll see what crops up as time goes on. Hopefully nothing soon!