Mopar has always numbered the rods and main caps as long as I have been taking them apart, starting with the mid 1950 Chrysler Fire Power hemi motors scope
GM didn't though down
OP, on your deal that motor is talking to you, it is hollering for some serious help up
Your on the correct path on taking it to a good machine shop for measuring the cylinder bores for wear and taper. I would bet a lot of money that the heads need new valve guides and a valve job also, sorry shruggy
Good luck on this project, do it right once or regret it forever work
BTW, if your going to have it bored look for pistons for the 1972 to 1974 400 magnum motors or look at some decent Hyper quench pistons from Keith Black up scope

Last edited by Cab_Burge; 05/07/18 03:45 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)