i would still take the starter out and take the rockers off , the plugs out and see if it will spin by hand. put a known good starter in it. if it doesnt spin then................
I would do what was said above by 73AbodEE with the oil as mentioned before by TrailBeast. Mopar has a gear reduction starter and if it is hung up in the flywheel you will have a tough time turning engine. I have been down this road. An old friend of mine always drove the KISS program in my head. That means Keep It Simple Stupid. Slow down and start with the simple things and eliminate things as you go.