gas doesnt go bad in 2 months......if your in warmer climate weather then screw the choke...leave it open,if you have a good tuned carbed car you should be able to pump the pedal once or twice and it will fire right up.then just let it idle until it gets warmed up....if it acts like its going to stall out cause its to cold then give it a little feathering on the gas pedal. lots of things you could check....luckily,its old school and there is only so many things that could be wrong with it. start with the basics though. good plugs and wires and all gapped correctly? is your timing on? is it points ignition? if so ,are they up to par? check your fuel filter.....air filter.......pcv filter. but if its just stalling out of the blue even when it seems to run great up until the point it just dies.....and sometimes it may start right back up and sometimes you might have to let it sit for a minute before it starts up.....I would almost bet that you have a bad ballist resistor. alot of people over look them when they have stalling issues and alot of the time its a bad ballast resistor (the little porsalin block with wires going to it) the one for the ignition not the wiper motor. you can pick them up cheap at your local parts store. I had a stalling issue once on a vehicle ....you could start it up and it would run great.......let it run for a few minutes and out of the blue "putputputbwaaaaa" it stalled out.....try to fire it back up and it would crank and crank and crank and nothing....wait a couple minutes and crank it and fired right up like noones buisness . ended up being the ballast. so anyways,that give you a few ideas to go by and a list of things to try but if your symptoms are what I mentioned then I would try a new ballast! good luck!!