Ok something new has developed the past 2 days. It's been cold as ball here recently and now Rag's here cuts off and on while driving.

Some things to state, I have installed:
New distributor
Cap and rotor
Plugs and plug wires
New Ignition coil

When I'm driving (usually when it's cold) and I'm cruising at a steady speed 35-45mph the truck cuts off and if I gas it, it will stall but if I let off and wait a few seconds sometimes it will kick back on. When it's warm it doesn't do it. When I floor it it feels like it's fighting but cutting on and off.

Any advice is greatly appreciated.