[TibetanT]

Not sure what you are asking here, but "Yes" the rod bearings can be replaced without removing the rods. Engine will need to be supported from above so the cross member can be removed from below to allow access.

If you replace just the rod bearings, also replace the rod bolts. I think you are also going to replace the oil pan gasket, which is standard procedure when down there.

Now, to answer the other question with regard to the rods themselves, I would make sure the rods are balanced...just my opinion here. Also, if it were me, I would probably be doing alot more such as: piston rings, crankshaft polish and other stuff since this is a teardown process.

Hope this helps.