I converted a 74 Roadrunner, so it'll be the same deal for you. I paid $50 for a console and top plate, about $100 for the shifter mechanism and all the linkages and brackets, $45 for a new shifter, and $30 or so for the torque bracket that bolts to the tranny. You can use parts for 71-74 Satellites/Roadrunners, Chargers, Cudas, or Challengers. Don't try to buy things one piece at a time as buying things like the shifter mechanism as a group is usually cheaper.
The hardest part of the effort for me was making sure the three brackets are in the right place. There are no reference marks on the floor, and pictures aren't much help as they can show a difference of an inch or so in location. But, there are some workarounds.
To convert:
1. Remove your carpet and locate the cut out area for the shifter to go through the floor. It's circular with little dimples showing where to drill the holes for the rubber boot ring that seals the hole to go through. Cut a hole about 1.5" out of the center of the area.
2. Assemble the shifter mechanism and attach it to the front and middle brackets. There are three brackets but the rear one is just used to hold down the console.
3. Attach the torgue bracket to the transmission.
4. Drop the vertical bar (the one with the rubber boot on it) that the shifter rotates through the hole in the floor, and make sure it slides into the hole in the torque bracket. This will make sure the front bracket is pretty well aligned.
5. Arrange the mechanism and brackets so that they are on the top of the center hump of the floor, and make sure the shifter lever is in Park. This will make sure you have the shifter and middle bracket in the right place.
6. Either weld the brackets to the floor, or do what I did, which is attach them using 3/8" pop rivets.
7. Go under the car (after the wheels have been chocked and you've got it on stands), and disconnect the linkage from the column shifter. It's held in place with a grommet that you'll probably destroy in the process.
8. Connect the linkage that runs from the vertical bar to the tranny, and lock in place using a cotter key.
9. Adjust the linkage by loosening the adjustment bolt and sliding the linkage forward or backwards. What you want is to have the linkage pushing the shift lever on the tranny all the way forward when the shift mechanism is in Park.
10. Put your console over the shifter, and screw it down, then screw down the top plate and put the shifter handle on.
That's it. Takes a couple of hours provided you have all the parts.
