[Coupe50h]

I just replaced my cable with a summit adjustable cable, i already have an aluminum quadrant, was easy, took me about 10 minutes to get the cable on, another 5 minutes to adjust, it helps to have someone else helping, but not necesarry, you just have to be able to stretch your arm under the dash by the gas pedal to unhook, and hook your new one back on.
and at the fork underneath the car, just use a pry bar to get it off the fork.

oh yea, i just noticed you have the self adjuster, i suggest you get rid of it, and get an aluminum quadrant, just take your front seat out, get under the dash, and remove the pins off the old one with needle nose pliers, slip the new one on, replace pins, and thats it, took me about 30 minutes.