7 1/4 rear end hold up?

Ok Ok im not saying that it will not go but i know what my dad and uncle have put them sop called pos rears though lol and only broke one and that was a slant 6 car lol ... now idk bout how much hp there pulling but my dad has a sb 4 speed dart that the motor it now gone but it was a beast when it was good mashing 5.0 all day long .. it would turn 14 flat now the other one was a 66 dart that turned 13 some thing and its not like they was ez on them .. now for my cars my old val had and still has one in it but thats th one my uncle tore up lol he had a hot 6 in it made two pass and on number 3 he let it all hang all u could here was boom crack crack clank clack tink tink and no movey lol .. so ya if ur pushing that much hp i would upgrade. if ur pushing 95 hp like i would be in my barracuda and drive it as a DD then i would not worry bout it .. but that just me good luck