1962 Valiant Suspension/Brake Swap Options with other A-bodies

Can't run a slant six trans behind a V8. Need a 64-5 small block V8 pushbutton trans and an adapter ring around the torque converter hub to fit in a later V8 crank. Can't remember what year they changed, thinking 68, but will have to look it up. Or someone could chime in before I get a chance to do so. I'm gonna take an after dinner nap, so will be gone for a couple of hours. I am an old fart, you know.