Master cylinder reinforcing plate
I don't know about a reinforcing plate, but I do know that you need to have an adapter plate if you want to run the later style master cyl. That's what I plan on doing when I convert to disc brakes later this year.
Here's is one on ebay from Summit Racing...
http://cgi.ebay.com/ebaymotors/Mopa...011QQitemZ320143186224QQrdZ1QQsspagenameZWD1V
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