Beefed up My six, need more power to the Rear

RustyRatRod said

They came with 727s too. There was a slant specific 727 and also an adapter plate that adapted a big block transmission to them.

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Rusty, I believe it adapted small block transmissions instead of B/RB. That was a truck/van only item in the 60s, the slant specific 727 came in later trucks, taxis, police cars etc.