you have a t-10 used up until 1964(OLD BOLT PATTERN) IN 1965 FORD WENT TO A NEW BOLT PATTERN.the t-10 was used in 1965 as well. but suoer t-10s were not used until 1974 when gm stoped making the muncie, all super t-10 were alum. caases.had one in my 76 t/a. the ansen bell housing is rare and heavy.b/w made trans.auto and manual for everyone.packard studebaker amc etc.... the early t-10 in studebaker used the chevy bolt pattern the later ford (1963-64). BE CAREFUL THE INPUT SHAFTS ARE DIFFERENT.