1963 Dodge Dart 440 727 install.

Thank you, I used the Schumacher mounts in my 69 Barracuda for my RB as well. I was told that the tunnel needed to be cut out for the 727, hence my coming here for the inside track.
'69 Cudas and Darts came factory with 440 and auto. M code was it and NOT too many made. I never heard anything about them changing the floor for such. But early A's are way smaller there than 67-9 A's/