it's pretty simple. as long as you can find the rod end.
it's a 1/4-20 thread.
first, i bend the stock lever a little in a vice, then cut off the tip.
the stock arm is tapered or milled down halfway from the factory, and i use a 1/4-20 tap to thread it down to the bend.
then just thread the rod end onto it. you usually don't have to add a locking nut on the end, but you can.
most of the brass cable ends that come with the kit will fit tight into the spherical bearing, and you're done...