What torqueflight 727 transmission rebuild kit do I need????

And or drive train failure! Always replace the spag after a shaft or similar drive train failure.
Whoever told you that the rear sprag fails under operator error only is full of BS.
Put a bolt in sprag in it.
Sorry I didn't make that clear. I do plan to replace the sprag but I don't plan on installing a 6 bolt sprag. The 4 bolt 12 roller sprag I linked previously is the one I plan to use. However TCI seems to have discontinued this sprag. If I can't find a TCI sprag I thought I read you can drill though the stock sprag and bolt it in. After drilling I would then replace the sprag's rollers, springs, and retainer. Is this still destined to explode?