if it's dripping onto the exhaust the first place i would check is the oil filter. get the car on jackstands and look at the filter, if it's covered or dripping in oil, either the gasket went bad when you bottomed out, it's loose, or maybe the structural integrity is gone, but give that a look. if not, it could be coming from your cam seals or somewhere else on the head. check the top of the engine, esp in back and see where the oil is dripping from.

if it's dripping onto your exhaust piping and the honeycomb thingie, i'd say it's most probably your oil filter, and not the oil pan.

anyway if you get it on stands, and get a flashlight, you'll probably find it.