Rear disc brakes..anyone used these?

Anyone used this rear disc set-up from "tomsclassic"? I was going with Wilwoods front and rear but decided that I want to be able to run 15 rallyes that will not clear the Wilwood set-up. So I am thinking about using a stock 73 disc front set-up with the Mopar aluminum master cylinder.



http://www.ebay.com/itm/mopar-8-3-4...666&pid=100015&prg=1085&rk=1&sd=230575563732&

















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