By use of my calipers and not a mic, have not invested in a set yet, my wrist pin is .984, from top of piston to top of wp hole is 1.182. That would give me the 1.674 CH. If using 6.123 rods then would 6.123+1.674CH+1.79(half stroke) equal 9.587 which would be just under the 9.6