[Spits] Vacuum port

[Larry Vaughan]

I have a Weber DCOE on my Spit. It has no vacuum port. The Cannon intake 
manifold has a plugged port on one runner. Can this port be used as a 
vacuum port for the distributor or a vacuum gauge or is it to be used 
for emmissions like the valve cover vent. I have the vacuum advance 
Delco distributor on right now, with the vacuum hose plugged. I do have 
a  Mallory dual point distributor that is all mechanical advance but I 
have to drill the shaft to get the oil pump dog on, which I am not 
anxious to do!

Larry