Scat arp 2000 rod bolts

Are these the cap screw rod bolts that you’re supposed to use a stretch indicator fixture to measure them while you torque them with a boxed end torque wrench adapter? If so, it’s whatever stretch that the manufacturer torques them to before the big end of the rod is final sized. Of course, torque spec is still important. If it stretches the set amount before it has reached torque yield, then it’s a stretchy bolt that has been overstressed during use or it was defective when manufactured.