Ok Rex.... Lets go with it... Since the car was running during that 14 year period, the gas my not be as old as you think. Anyway the solution there is a complete overhaul of the fuel system so try to tune it up first. It's worth a shot since the car was running "well". Clean all battery cables and make sure they are the correct size and all connections are clean. The main thing for now. make sure all the connections are clean. Do a tune up. Points, Plugs and Condenser...consider new plugs and wires. Make sure it's in time and the distributor is set at proper advance at idle. Pointer to pulley dot at idle... Condensers can fail suddenly causing the symptoms you describe. Points can fail especially if the car has been converted to 12V and no ballast resistor was used. If the distributor has moved it may not be at proper advance. In this condition the engine will have a inconstant or wandering miss. Do the basic tune up stuff.