I have used the parts/brackets by Scarebird. Their system will give you 12 inch rotors and easily sourced parts..Hope this helps.
-------- Original message --------
From: B M <polara1964@xxxxxxxxxxx>
Date: 10/2/2017 10:29 (GMT-05:00)
To: 1962to1965mopars@xxxxxxxxxxxxxxxx
Subject: Front Discbrakes