This is what is installed in the 7,093 mile original, unrestored '70 Stage 1 4-speed that was at the 2010 GS Nats.
Sorry! Wrong plug. I should of been more clearer, I was talking about the plug in the back of the intake that plugs the hole where the automatic trans modulator line would go.
Here is the plug in back - Don't look like its threaded in much or it's a long thread...lol Would think same as 70 but ?