Just my two cents but even if you can get to the con bearings, I would think that the crankshaft is damaged enough to warrant that it be ground. If there is any distortion in the rod journal, the the new bearings clearances will vary and probably be too close. Also the big end of the con rod will more than likely be out of round too and you can't get that out without pulling the head.
You really never now untill you have it apart and can get both pieces measured, but after going though all the trouble of getting the pan off, there isn't a lot more left to pulling the engine. You really do need a mechanical oil pressure guage too. The stock guage reacts so slowly it is hard to tell what it is doing at the more critical times, especially when it is hot.
Again, just my two cents worth.
Russ
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