Rod bearing size

[Busted Knuckles]

Your local parts house should be able to tell you. It should come up on the list if they need any special block numbers. Ask for the standard bearings, then measure with a micrometer or caliper to see if any of them are sized down as if they have been turned during a previous tear down. I would never assume the engine has not been worked on before, considering the critical-ness of the bearing clearances for a healthy engine.