Installed PS on my 66, also went to automatic. A stock 3 speed, original non power steering column is too long for this swap. It will pin you to the front seat while driving, and the column to dash bracket will not line up. Power steering was not available on the 61-66 until (I think) October 1965, so there are probally few,if any stock 3spd & PS columns around. If you are running an automatic, PS/AT columns until 79 will work. I used a '72 with the 66 dash bracket and the original 66 wheel and it does just fine.The box will bolt right in and everything else just takes a little thought..