Thinking of syncing my carbs this weekend I think. Going to use the homemade "Yardstick and tube" method. However I need to know what adapters I'm going to need to do this.

There only seems to be one port, with the rest plugged by screws. So where can I get what I need? Or what size to get from Pepboys (ugh... loathe that store with a burning passion now)

 

there should be only one port with a screw one the #1 cylinder , the others should have little rubber caps on them, located under the float bowls... you should only need the one adapter that screws into that port the rest are just standard vacuum tube fittings..(unless someone has tinkered with it already, and knowing your PO they probably have).. I've seen a a few how to threads posted on the method your planning on using... if you can't find the adapter to screw into the #1 port I have a few extra laying around, I'll send ya one, let me know.