Pressure wash the hell out of it then drive it hard for a few miles. Check every few miles to look/see where the oil starts coming from. Look at the front of the intake manifold where it joins to the block, look where the lower edged of the block meets the oil-pan. There are two bolt holes on either side of the block in that locationwhere oil can start to leak.
One more thing, does your intake have the factory oil fill tube at the front of the engine?
It may have oil vapor leaking there when the pressure in the crankcase increases.Need to have a pcv valve installed in one of the valve covers.

There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!