318 oil leak on front of engine; bolt holes

Hi everyone, I have a 1968 barracuda with a recently rebuilt (by PO) 318 Chrysler. It leaks oil out the front and slings it around the engine compartment. I naturally assumed it was the front crank seal. However after removing the harmonic balancer, there is NO signs of oil around the seal. I did notice 2 bolt holes on the timing cover down low by the oil pan on both sides. They go into the block a ways, could this be an issue? There is also an empty bolt hole mid way up the right side of the timing cover (3rd hole, longer bolt). Newer timing covers don’t have these holes. Anyone know what these are for? Any help would be appreciated before I move forward with tearing into it more.

Thanks for the info KENO.  When I got the boat it had been recently rebuilt and ran by the previous owner a few times.  The bilge didn't have any oil in it when I got it. I purchased the boat in August 2021 and only ran it a handful of times and it leaked from the start. I spent most of that time tuning the carb and timing with the engine cover off and the oil would sling a spray up the sides of the interior.  Would a leak in the oil pan/timing gasket get oil onto the harmonic balancer and sling like this?  I'll try to include a photo or 2. There is oil around the rubber pan seal.  Thanks again

pjsmoreno wrote: By looking at one of  the pictures, looks like sometime is wrong with your crankshaft seal.

The Crankshaft seal was my first thought, so I bought the correct reverse rotation seal. But when I took it apart to begin the process, I noticed the area around the seal is completely dry and clean. Including the inside of the dust cup on the harmonic balancer.  Is this normal with a bad crank seal?

Keno is on the right path. Comes down to trouble shooting the problem.

Wonder if its leaking while just running, cruising or coming to a stop on the water?