Aside from cutting the gears the rest of the transmission came out really fast. The gear bore's had to be finished. Some gears got keyed, while others had a pattern milled into them for the shifter. I went with a tripple key because these transmissions are thrashed around from forward to reverse under high loads. Eventually a single key loosens up and falls out. I used 3 keys instead of 2 just because I like the symmetry better. If you've seen a double key before, you know it looks awkward.