7 1/4 rear end hold up?

I have a 7 1/4 in mine with a 360 built from mancini not sure of the HP but I hammer down on it took it to the drag strip and everything and haven't had a problem...not saying it wont rip apart next time I get the car out.
i am not pro 7 1/4, buts it good to hear someone having a positive experience with one..