It is a very simple swap. I did it on my 245 track build. As long as you have all the pieces for the manual mirror set, it only takes a few minutes on each side. I had to modify inner triangle shaped piece to cut the hole out for the mirror stalk, as I didn't get that part from the seller. I cut the wire, taped it off, and shoved it into the door. If you plan on going back to electric at some point, you obviously want to spend more time fishing the wiring out in one piece.