you can use the drive shaft from a 904 1966-75 a body its the kind that slips the back of the transmission in make sure you pull it from a 904 because 727 is a bit longer.
I would recommend a B and M shifter cable style all thats needed is to drill 4 screws and you can run the line thru an exsisting hole with rubber cap over the transmission tunnel. upgrading your driveshaft is a good idea because you get rid of the ball and trunion.
Also if its a slant six car you need to change the center link to an early a body one they now reproduce these. if it was a slant six car you can use slant six to v eight motor mounts from schumacher.
Also would recommend using 10 in drums (came standard with v8 cars) in the front if it was an original slant six car it has 9inch