73 dodge dart wont stay running for longer then 10 mintues.

This problem has me at my witts end. I replaced the whole distributor, distributor cap, rotor, plugs, wires, ignition coil, ballast resistor, and ignition control module. Before hand the car run alright just had a little miss here and there. What happens is it will drive fantastic for about 10 mintues. Then it seems like it is running on four out of the six cylinders and when I take my foot of the pedal it just dies. It has fuel in the filter right before the carb. Has anyone had this happen before? It is a 225 slant six. If you need more info I can provide anything I would know. Please help my registration ends at the end of this month and I'm going crazy with this car.