Disc Brake Conversion Question

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I have a 63 C 10, and i would like to convert the brakes from drums to discs front and rear. I would like to keep the 6 lug pattern and use the new 2 1/2" drop spindles in the front and use the steelie wheels i already have. Additionally i want to mount the master cylinder on the frame under the cab.

Is anybody aware of any companies that supply the complete kit. And has anybody done this who could provide any problems or tips

Thanks