first of all I am a loyal mopar man. why are you on here trying to start a argument?? the man ask about 727 right?? not anything else you brought everything else up . and I am just saying a mopar guy will never have a good trans if no one works and develops one or builds a case. like you said the 400s are all aftermarket why cant we have aftermarket 727 ?? there is a 65 Plymouth that runs at pittsburg raceway and it has a b1 motor 727 and a dana 60 weights 3100 pounds and goes 7.70s so it can be done.