This may seem like a ton of liquid gasket, but it’s thinly applied and not super globbed on. It’s not going to end up in the transmission.
Finally, the roll pins were hammered in. When you want to remove the shifter, you simply hammer the roll pins all the way out through the bottom. It’s essential that when you locate the holes for the roll pins, that you don’t locate one of them on top of any of the transmission. You can just barely see the tail of the transmission in this photo near the right-most roll pin. If that roll pin is too far to the left, you won’t be able to hammer it out. Measure thirteen times, drill once.
Barry did some measuring and realized that he could chop the top off the dash, modify the bottom, and then reinstall everything using most of the same mounting locations. There’s also one other trick.