X Head cc's

My J heads are 68cc. Don't know the history, but I'm glad they are what they are! 2.02 valves, mine are off a 340. They are on a 318 ELE for now but will end up on top of the 360 I am building. I saw a mark on a rod journal the other day, from a bearing, it was like the shape of the little slot where you index it dirrectionally in the saddle, I wonder if a micro polish will take it off, or if I gotta have it taken down .010/.010, I obviously ain't made it to the machine shop yet, ya know, but I decided to build a straight 360, I can't afford a stroker kit right now. I don't mind, I saw the thread about dyno'd 360's and I am sure I'll be happy. Good luck w/ your heads.