Has anyone installed the free spin kit from Solid Axle? I want to puy one on my truck, and the choice is Dynatrac or Solid Axle. I like the covered ABS tone ring with Solid Axle and the price is $600 less, but if quality is an issue, the extra $600 is cheap. I saw a check out discount to use for Rock Auto, does anyone know of one for Dynatrac or Solid Axle?