I'm under the impression that NHRA requires stock size rod and main bearing journals sizes on SS and Stock
If you haven't call NHRA headquarter tech. yet to get the straight information, not another racers opinion
I would now before doing anything on buying rods. I would probably E mail them also after the phone call to get what was said in writing to take to the races just in case if you ever need it
Employees make mistakes and can and will deny saying things that they told customers wrong
They can't deny what is in writing with their name on it
IHTHs