Please call 330 990 8155 and I will help you out with all the questions and parts we might be able to upgrade your stock rear with. The rear MIGHT have just given way because it was old and sloppy...ANYthing left of the rear? What parts gave way ...sometimes the destruction can tell us where and what went wrong. Jim

Hi I've been advised to ask you about upgrading a BOP diff. I just finished my 1964 GTO in July, it has a stroked 428 built by Milt Schornack backed by a Tremec TKO 5 speed. After some break in miles I launched it this past weekend and broke the diff. I have not pulled it apart yet but regardless want to improve it in the original case if possible. Thank you in advance for any advise you can give.