First and second generation hemis (I.E. 354/392, etc, and 426) do NOT use the "one" gear reduction starter that most passenger / light trucks use
ALL of the "one" starter that fits years and years and YEARS of /6, 273, 318, 340, 360, 383, 400, 440 etc etc etc ARE gear reduction
ONLY the "street hemis" and some larger trucks did not use the "one" starter.
NOW really, there isn't "one." While all gear reduction starters bolt up OK and "work," there ARE some that are heavier duty and have a larger motor casing. What that means is, if you could go back in time and yank a starter off the "loaner 4 door /6" and put it on your high compression 440 sixpack, it just might not crank all that well.