For a street car, it's probably going to be fine. I've put a lot of abuse to them and not broke one yet. If you're going drag racing with the car and some good hooking suspension and slicks then maybe a 9" would be a better choice. Kind of hard finding parts for an 8", too. I sold my last posi to Howard a number of years back and haven't really seen any other coming up for sale. Parts wise, you might end up better off with a 9" just because there's so many parts avaialable for them, both new and used.