Sounds a lot like it probably has a carburetor problem to me.
I'd try a rebuild on the carb and a general tune-up (new spark plugs, spark plug wires, new cap and rotor, fuel filter, air cleaner element, and pcv valve.)
That might make a new car out of it!!!
Let us know! Pay particular attention to the setting and condition of the carburetor float (how much it weighs, and getting it set to the correct level) when you do the carb rebuild. That stuff is critical to good driveability.
A valve adjustment couldn't hurt...
Good luck!:cheers: