1978 Ford Truck Help !

I have a 1978 Ford 4 wheel drive 150, Motor is a 400 Big Block, i put new timing chain, and gears in my truck as well as new ignition coil, ignition module, distributer,cap and rotor,plugs and wires, i put al these new components in and now i have no spark coming from my ignition coil, I have no idea what is wrong, got any advice ? Thanks

Only thing i can say is recheck all your connections and try the parts one by one on a friends truck and see if any of the parts are bad.