for stock use you will be fine at 060 the backer is thicker so it is just not more babbit so they do not beat out in use. many times i will try to find a better crank but in you case used what you have Male makes the bearings in cb633p for rods and mains ms909p and come with a over size flanged . on many job like this i would grind crank to housing bore with bearing s installed for real size then grind crank for oil clearance you want