Help needed passing Emissions!

I still remember "the old days" when this stuff got ramped up. Before I got out of the Navy, NAS Miramar, San Diego, 1974, CA was requiring retrofits clear back to 55. you had to buy a retrofit kit, likely "the best" was made by Carter. This was a control box, tied in to a temp sensor with a solenoid valve which killed ALL vacuum advance until the engine got "too hot" (It turned on the advance to cool down the engine, not for performance)

In addition, the instructions told you to retard the SH*T out of the timing, lean down the carb (set on an analyzer) and then it had some add on idle screw caps with bright green RTV to show that is what you did.

A more simple kit DID NOT have vacuum advance. That kit permanently capped the advance hose with bright green plugs and caps, and same green caps on the carb. They burned down a LOT of engines