I'm with Randy on the pistons. I would use some dye penetrant to check for cracks and mic them carefully. Also check and make sure the piston to wall clearance is what is recommended by the manufacturer.
I check my pistons at the centerline of the pin, 90* from the pin. I also check them on the lower part of the skirt to make sure the skirts aren't collapsing.
As I said before, I wouldn't even consider using those rods.
Another thing I would do, and I'm sure you probably are already considering this, is to check the crank for cracks.