All the ARP 8640 (I think that is the correct number for the cheaper ARP rod bolts) and all the ARP 2000 bolts I've used had nice machine recesses, divots, in both ends for the rod bolt stretch dial indicator ends shruggy
I do remember reading on the stock 440 and 383 ARP replacement rod bolts with nuts to stretch them and release them three times before using them with their stretch methods a long time ago shruggy
IHTHs luck

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)