It is a bad practice to re-use connecting rod bolts (but you already know that). But I am guessing that if you have a stretch gauge on you that you can zero out the dial indicator on one of the rod bolts and then measure all the rest of the connecting rod bolts. If everything is still the same length, you at least have some technical data to backup your re-use of the bolts. But then again, you just gotta ask yourself if is worth the risk.