I replaced the vacum advance and my problem wasn't fixed which is the car starts fine but when you put it in drive it dies like it is getting too much air or not enough gas, The plugs are new along with a new dist. cap and rotor button and newly timed and I have a Petronix ignition to replace the points. 

The dashpot and rod that attaches to the gas throttle, goes through the carb and attaches to the choke control, dashpot rod has a lot of play in it on the pot side and the choke control side .

Could this play in the rod allow too much air through the choke system that would cause this problem.

Also if carb is bad , does anyone have any ideas as a brand I could replace the tpot carb with the least amount of adaptation and cost?

Claim to fame is the car was used as an extra in the movie Diner with Micky Rourke, Steve Gootenburg, Paul Riser and Kevin Bacon.