M code barracuda

33IMP said

I am NOT an authority on the s/s hemi a bodies, but I think they used b-body Dana's with special backspace wheels, to account for the extra width.
But there were only a few hundred ss cars built. I'm guessing the didn't want to bother doing that for a mere 440 a body, so the 4sp simply was not available.

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Well since that wasn't a body in white, special order race car if you imagine the warranty issues if they would have stuck a 4-speed in those bad boys? Brutal! Now I've talked to a couple people that actually own original numbers matching ones, what I can't figure out is where the 383s and 440 cars, (H and M) built to Magnum specs Factory?