Having problems with my '72 ghia, think you can help?

check to see if the low idle switch has become stuck . its on the carb and has a wire coming out of it if it sticks car will run rough . easy quick test turn key on pull wire off did it click if not test for power first if no power to switch you may have damaged or unplugged wire while replacing floors see if the choke wire is hot as well. it can be un screwed and freed up sometimes hope this helps

Ok.. I am trying to see a connection between re-doing the floor boards and the car not running well. My only clue is that back there, under the rear 'seat' you may have knocked loose one of the wires from the alternator or that regulate the fuel (if you have a jet system).

It could also be as simple as the wire from the battery to the car that is loose and it is shutting off the power to the switch...(which makes the car turn off and on)..

go back in there and check all of your connections and look for pinched wires under the floorboards.

cap and rotor may be bad

choke stuck on carb

valves need to be adjusted