7 1/4 as bad as they say

Nothing wrong with a 7&1/4 rear. There were even some 7&1/4 posi units produced. I dont know what horsepower you're throwing at it. If its the original rear its 34 years old and aint broke yet. If it was so easy to break the previous owner would have broke it. I've got one under a 73 V8 car with over 300,000 miles on it, including burnouts, towing, etc..