I have a 73 Duster and it has an 8 and 1/4" read end under it, stock except for a Posi unit I had installed. It has the 5 x 4.5" pattern with the wide drum brakes. I really want to replace it with a 8 and 3/4" rear end. Out of what body (A, B, C or E) would I be able to find the rear end that is...