In the 2 videos I posted, are those guys doing any serious damage to their 727?
No way of knowing because they don't say what kind of valve body they have. But I don't think they are doing anything real bad as they never really get good traction before letting off the gas.
I think you are over agonizing this ....
Part of a drum exploding is taking the engine over 7000 rpm , want to avoid that, don't rev the engine that high ... rev limiter ?, put in a 16 element sprag, put in a billet front drum, only do burn outs in manual low with the low band applied or drive the car like an old lady ...
