No spark?

Well i went out to play with the car today relocated the fuel pump and changed all the hoses and lines(they leaked). Then decided to unbolt the headers. Well i started it up it was running great then just shut off. I filled the car with gas and still nothing. Pump is running and getting pressure at the gauge and down the carb. I then decided to put a screw driver in a wire while my dad cranked it and nothing. The car is a 73 dart swinger with a 318. I had an extra ignition box from my truck and a new ballast resister swapped them out and nothing. Where do i even begin?