Yeah I agree, I used the nice factory main bolts, I don't want to compromise the original line bore, I've noticed that different bolts can cause things to shift from the original placement. I even us the nice factory head bolts. I just inspect them and if they don't look good and most importantly if they don't thread by hand with ease to the dead end (usually the shoulder of the bolt) I discard them. But yes for sure better rod bolts, for that matter better rods if racing is going to take place but that isn't the case here.:-&