[AKnowles]

Haz, first of all, my sympathies. Have you pulled the oil filter, or had a mechanic do it, as Jake suggested and checked the filter intake to see if any metal particles are present? If any are and they are ferrous then you know metal has been introduced to the engine internals via the bypass port. In which case the only way to determine the extent of the damage is a complete engine teardown.

Checking the engine this way will be the least expensive way to do a prediagnosis of the engine state and might help you defray the cost of a replacement (i.e. used) engine. I put it this way as what is in the sump is less important than what has gone through the bypass port and been introduced to the engine internals.