main caps need help
If your engine has never been rebuilt or taken apart most likely you will have to number the main caps and the connecting rods. Use an electric engraver that you can pick up cheap. This is not done by the manufacturer. When purchasing new main bearing caps 1-4 are the same part number. When installing the new ones they have to be align bored and honed. If you get yours mixed up you might be able to take it to a machine shop for them to mic the caps and the block to get the caps back in the right position. If they can't the block will need to be align honed after the caps are installed.