Installed Skip White Dist, now I have a related question

[MVHandy]

Okay, I installed the new Skip White distributor and it works great, after I got the plug wires on right. I accidentally switched 6and8 at the dist. I was going to use a points conversion and then realized for a few bucks more that the cheapest Accel or Pertronix points eliminator Skip White has a complete new HEI distributor.

In looking over the rest of the vacuum system I heard leakage and found this gizmo cracked. Can anyone tell me what it is so I can track down the replacement?

I also seem to have some vacuum hoses that need attention, can anyone point me at a vacuum hose diagram for a 72 Cheyenne with the 350 4 barrel? If not I'll just have to get to the library Saturday to look for a Chilton's manual.