Run your differential until it breaks, Which it won't. You need to identify your 10 Bolt. You could have the same size ring gear as a 12 Bolt. The 12 bolt from 64-72 would be a good one to measure. Don't know what HP you are talking. 400HP is no problem for your 10 bolt.


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn