I got a cone style sure grip in the garage, but I don't know how to install it
Met one of the new neighbours the other day (69 dart) who said he would get me in touch with one of his buddies, who can set it up for me, but we have to gotten there yet
It's really not that hard if you're just replacing the differential. Measure your current backlash, install sure-grip differential, set backlash the same as before, install, and go do two-sided burnouts.