I used those gizmos to shorten my cables before I got the brake with the drum that clamps the driveshaft aft of the brownie. The shorteners are still on the truck as are the cables and fittings for the drum e-brakes.
One thing to consider when using the factory e-brake setup on Huck brakes is that when you set the e-brake real hard at the bottom of a hill when the brakes are way hot, the force of the shoes will warp the drums. It takes many heat-cool cycles to make them round again but they eventually will. Under no circumstances grind or turn those drums. There are no more of them!