Brass T-Fitting vacuum plug. This is the 5/16" plug. Tri-power Engine Compartment you need one of these

you need one of these

Also have the front and rear 59-66 end carb throttle bodies on the web page and the large 66 center throttle body

Originals screens can be used but may be slightly smaller causing the foam to not fill the base entirely

This choke stove attaches to the manifold with one special bolt and unique lock washer

Poor quality control

Brass T-Fitting vacuum plug. This is the 5/16" plug. Tri-power Engine Compartment you need one of theseThis is the plug that is used on the brass T fitting for the 1959 1964. This is for the smaller 1 8" port that is used on 1959 1964. uses 5 16" plug There is a larger T fitting port that was also used later in 1964 with a larger 3 16" port. Plug is 3 8" for larger port. Measure what you have prior to ordering the plug, or ask questions.