[MAC71]

I did this on a friends 71 and it really easy. Your best bet is find a truck with a manual at a junk yard to pull the clutch/brake peddle assembly out of. Also you may or may not need the linkages based on if you stick with mechanical linkages or a hydraulic clutch. As far as the transmission there are lots of choices out there. I would do something with overdrive but my friend did a Richmond 5 speed with a 3.07 rear gear. He pulls a boat with it.