On my 74 Duster with a 360, 904 and 3.23 gears I installed a Lokar throttle cable and kick down cable. It worked ok but my shift points were way too low when I adjusted the kick down to allow wide open throttle. I decided to install a spring to pull the cable sooner and still allow WOT. See the pictures below to see how I added the spring on the kick down cable. I raised the shift points to 1-2 at about 25 mph and 2-3 at 50 mph when the throttle is at WOT in drive. I'm going to try a little more tension on the spring cause part throttle acceleration could use it and it still won't kick down from 3rd when passing.
Cley
Cley