I have an 81 Jeep CJ5 and when the motor is warm and i get to about 50mph the motor stalls out. I recently put new plugs, rotor and distributor cap. Any ideas?

You have to figure out if it is spark or fuel, so when it dies, put a spark tester on it an see if you have spark. If you do, you have a fuel problem such as bad pump, fuel perculation or maybe even plugged filter. If you don’t have spark, I’d suspect coil or module but could be other stuff. The good news is that if you can duplicate it, a mechanic should be able to find it.