Rear End Carnage!!!!!

The 8 3/4 vs Dana 60 debate is as old as the cars they came in. No one is going to question the facts that a Dana 60 is stronger than any 8 3/4. That said I have raced on 8 3/4 rear with SS springs for many years and many passes in 3300 lb cars running low 9's. You mentioned yours was a 4 speed. Maybe driver error? Was the driveline slack out before you launched the car? Did it wheel hop? What was the condition of the internals before it came apart? It's very easy to throw rocks at the 8 3/4 and condemn it without the whole story.