Pull the distributor and oil pump drive gear and prime it all you want to.
Once your done with that pull the number one spark plug out and bump the motor a little at a time using the starter, use a helper if needed with your finger over the spark plug hole and once the compression starts to blow your finger off the hole stop and look at the dampener timing line to see where it is in relation to the TDC marks on the timing tab on the timing cover, if it is before or after move the crankshaft as needed with a socket and breaker bar to align the zero mark on the dampener with the zero mark on the timing tab and then drop in the oil pump drive and align the slot in the pump drive using the factory service manual instructions
You can also mark the distributor and block with thin alignment marks and then pull the distributor cap off and see where the rotor is pointing to and then make a mark on the dampener and the timing tab on the timing cover and then make sure and return the crankshaft to that position where it started at and put the distributor and oil pump drive back where they where and start the motor up.
Make sure and set the timing to where you want it or maybe to factory specs if you like them
I use the stock Mopar settings on the oil pump drives and distributors on all the motors I build to help prevent problems for the customer down the road