... I put a OD in a 440 B-body that I took from a truck. It lasted about 45 minutes before it sounded like marbles in a tin can after some hard gear changes. I do not believe they were built for abuse of a performance engine. If you want to granny your car around to cruise meets or shows I would say good choice for economy. But that defeats the purpose of driving a old performance car for the feel of what they were...