Vacuum Source for Auto Trans Modulator

[MercuryMarc]

On my 69 200, the vacuum line to the tranny modulator threads into the intake manifold below the carb base. On my 78 200 that I am rebuilding, there is a large port that the prior owner blocked off with a metal plate. There is another threaded port on the intake manifold on the top surface of the intake manifold at the very front of the manifold.
Questions:
1. Can I run the vacuum line from the front port?
2. Or should I drill and tap the metal plate and run the vacuum from right below the carb?
3. Should I "T" the vacuum off another vacuum port such as the carb base plate with the PCV valve?
Thanks!
Marc in SF
63 Comet Ragtop
http://mercurycomet.net

 

[Mustangaroo]

Whatever..............................
Really as long as you give the transmission a good vacumn signal it doesn't mater where from It's can share the vacumn thru a "T" or where ever you hook it up to!