The top guy at SCAT told me once to only use bonded type dampers. He said no FD and no ATI. He only wanted me to use the BHJ style bonded damper with his crank. He said anything else could break the crank. I kind of doubt it is true since ATI dampers are almost every pro built engine I've seen over the last 20 years but that was his story and he stuck with it. Now the story might be different with different engines since the original SBC had a fairly weak snout on it. But it is super rare to see a Mopar big block crank snap off at the front cover. I have seen SB Chevy cranks snap there on multiple occasions. Even on street cars I've seen them snap off.