trans/rear combo

i romp on it pretty good sometimes, and all i get is a roar, sometimes squealing tires, but never a broken ***...
so i guess its not a 7 1/4...
and im pretty sure it is all original, the guy i bought it from didnt tell me he had a new one put in, and he bought it from a kid who's grandma had died and he was just trying to get rid of it, so i think im 3rd owner...