Won't Start need advice, Please read....

He remarked the points were a little off but the main issue was two spark plug wires were crossed.
lol, been there, done that, it gets even harder once you start fiddling with the eight cylinders
Now I even had a diagram showing the proper wire placement but I didn't even check since I have not touched more than one at a time. Now, some other things are now making sense. I live in NJ and drove the car out to Carlisle PA for Chryslers in Carlisle, it is a big show just Mopars. the car ran okay but burned 2 tanks of gas and the temp gauge ran hot but never boiled over. I'm wondering if the two cylinders not firing correctly would have caused the engine to run hot? The Mechanic who switched the rebuilt engine I'm wondering if he crossed the wires and they have been that way since bringing the car home.

Again I feel like an idiot but if someone else could learn from me not checking maybe it isn't so bad then...

depending on when the plug actually fired that could have been causing it to run hot
definitely killed your fuel mileage and more then likely the oil you have in there
(unburnt gas running passed the rings into the oilpan)
I would suggest an oil change