904 or 727 ?

70aarcuda said

beef up is new clutches and steels in 904...

are you going to put old clutches and steels in the 727....so the price is awash

one thing a 904 needs is the 24 spring kit for the front drum...100 dollars

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Please tell me more.
I would rather use the 904 I already have.
Maybe I need to find another trans builder who speaks Mopar!
This guy said it would be way more expensive to build the 904.
He said I would need a new larger input shaft and even then it may break. (his words)