OK I will forget about the main relay. I know you need three things for an engine to run. So I will start with spark, then check fuel and timing events.
I should of put up more info, my bad. I rump roast-u-med/was hoping there might be a common failure area in these cars. I hoped to arm myself with this info before killing 10 gallons of fuel to try and help him out.
P.S. It's carbed.