From like 1967 to 1981 the small block F body had a T-10 or a super T-10, I think. (except for the 302 Z28 and Lt-1 Z28 which had a Muncie)
Been a while but I've owned six F bodies '67, '70, '74, '75 , '93 and '96
Same trans as the Vette without the OD.
If your 4+3 is working great now I...