Best guess on 440 RB motor

I've witnessed with my own eyes a SB Vega rip the "guts" out of a Dana right at the line, peices everywhere, any rearend can granade. I've never had an 8.3/4 go south, lucky i guess.

True,and i saw a dana come apart in a '70 cuda a few years back..as for the 8 3/4 holding up theres guys running in the 9's with them..