I'm missing something here. Don't you know about the neutral alignment hole? Where you stuff a rod/ screwdriver/ allen key? Download yourself a service manual, free, from MyMopar. But I concur with "starting it in gear." Just put the thing in HIGH gear so the starter has no "leverage" and see if the engine cranks freely. You can pull the coil wire and ground it.
Both transmission levers should be in the "middle" position and both shift box levers should be aligned, and once again, THERE IS A HOLE through them for that purpose
The remaining fly in this soup is ARE YOU SURE you have a "straight through" 4 speed and not an overdrive box? OD box the 3/4 shift lever must point down, because when you select 3rd gear with the shifter you are actually in 4th/ straight through at the gearbox, and when the OD shifter is in 4th, you are actually in the gearbox position of the 3rd gear, which has been re-geared to be the OD gear