B Body 904 Transmission int a 65 A Body

I'll try to remember everything. Is the trans for the same engine family? slant six, small block, big block. cannot interchange between families.
1) 65 Is cable shifted, 68 is mechanical linkage. So different shifter needed
2) need speedo cable for a 66 "A" body
3) New driveshaft. 65 uses a B&T front u-joint. 68 trans uses a "normal" slip yoke and u- joint.
4) Have to modify wiring for backup lites and neutral safety switch.
5) I think you can use the same kickdown linkage, but will probably need to swap the lever on the trans