Add large tires to your truck, with a winch and some other extra weight, and it doesn't stop. We have installed disk brake conversions for over 5 years, and in that time, we have used many conversion parts, some worked, most didn't, very few fit well, most required work to get bolt holes to line up, such as certain cast versions of this design bracket.
What we did was to take the good, and the bad, and build brackets that work every time. There is only .003 tolerance on these brackets, which required us to start by laser cutting .375 ( 3/8ths) steel, then forming it, then final machine of the holes that bolt to the axle housing and the caliper. Once using this 3 stage process, we came out with the perfect bracket. We also needed it to be one piece, not 2 or 3. Simple makes install easy.
These brackets use common Chevy car calipers. Years of the calipers are 79-85 Monte Carlo or Cadillac Eldorado, front or rear depending on if you need the e-brake or not. There is a small knob on some calipers that will interfere with the bracket, grinding is ok.
E-brake style calipers are about $300pr.
We supply a modified Chevy rotor if needed, they are $90 a pair.
The braided brake lines needed to connect the Toyota to Chevy caliper are $90 a pair and are full length braided lines to the Toyota factory T fitting.

Adding modified rotors, or Calipers adds additional flat rate shipping each (I.E. $20 for rotors, $15 for Calipers)

Brackets will fit standard pattern Toyota axles, 1979-2004, some 2005-2006 axles, customer will need to double check there pattern with an older axle. Grinding of ABS ports may be needed if equipped

Note on installing kit on ABS equipped vehicle:
Just wanted to tell you the brackets i purchased for my Disc Brake conversion worked great. Only thing i would recommend to folks is to put the Left Caliper on the Right and the Right on the Left. This is due to the ABS and keeping the bleeder above the hose fitting