Here's a few ideas.
Wilwood's.
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For the 4X4's. The Ford & Toyota offroaders commonly use this style .
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http://www.4xshaft.com/Brake_Rotor_Kit.asp
Most of the pinion kits I've found are for the Ford 9". Reason being is the ease of mounting.
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Here's one that was made by a Co. called 'einstyn', for GM 10b & 12b's. Apparently no longer made, but the pix will give you an idea of how they did this. Used a cable actuated caliper. Looks like Wilwood's caliper.
For a 12b.
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10b. version. (Those welds! yeesh!)
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