https://www.enginelabs.com/news/what-i-learned-today-with-jeff-smith-reverse-rod-bolt-stretch-tech/

This article says you can look up the ARP part number for a rod bolt, get the length, and measure it on an already assembled engine to determine if it has the proper stretch/torque.

I have not found the lengths to be sufficiently consistent. Even on one set of rods they vary enuff that I have reset the length gauge from one bolt to the next.

What have you found for length consistency?