Look at the first photo of the bearings and enlarge the photo, Looks like light grooves and wear pattern in the bearings to me. What's the crank journals look like? I believe that the OP said that the engine has 90,000 miles on it so there's probably wear on the journals. I'd have to see the crankshaft and mic the journals before I would say bolt it back together and go for it. If it was me and the crank checked out I would at least polish the journals, and I would go with new bearings and rings.