Going from 4speed to 727 in 65 dart question
you will have to snip and hammer the floor/fire wall seam flat, no big deal,,,i did it to a 66 cuda years ago,,,you may have to make a few dents in the floor/tunnel area,,and im not sure about the cross member in a 65 A body,,,it may need some attenton to the trans mount flange where the 2 bolts go thru to the tail shaft,,,
dont bother trying to find kick down linkage,,,just go with cable kick down,,much easier to adapt,,you can get it from a ram truck up till 2002 with a magnum motor,, or from lokar or bushlon