Well hopefully the drive key on the bottom of the distributor shaft is not damaged.
Remove the plugs so you can roll the engine by hand, put #1 piston at TDC on the compression stroke, both intake and exhaust valves will be closed, your index mark on the balancer should be at or close to 0 on the timing tab.
Install the distributor. Check to see that the rotor is aligned to fire to #1 on the cap. It should be close enough to start.