I have never done it myself, and likely never would, but years ago, a buddy replaced the stock rod bolts on his 12 second 383 powered Dodge Dart, with ARP bolts, on the assembled and had been driven for a few hundred miles engine. He just pulled the oil pan, and doing it one bolt at a time, knocked out 1 bolt with a punch, installed the new ARP bolt, and torqued it before replacing the next bolt. I figured the thing would have kicked out a rod shortly after, but it didn`t, it ran strong until he sold the car a couple of years later. For all I know, it may still be running!Again, I would not do that, but he got away with it.