65 Bcuda (please educate me)

A lot of people feel that the original 7 1/4 rear won't hold up to a strong V8 being pushed hard, and they're right. If you are just installing a stock moderate horsepower V8 and not doing burnouts and racing alot it should survive. Better off getting an 8 1/4 to replace, or if over 400hp, an 8 3/4. JMO, Mike