Wanted to post if you 65-66 guys had a power disc brake setup installed by a PO. The 66 has been so dead reliable since the FI install, except for brake fluid would have to be added periodically. The master cylinder was leaking out of the back, and I think through the rusty body! I looked a long time and finally ID'd the master cylinder as a 1977 ish mustang PB setup. The front fitting(drum section) is a 3/8 and the rear fitting is a 7/16(front brake res). The piston is 15/16. The brake setup appears to be stock 4 piston calipers. All the suspension appears stock V8 stuff. Hope this helps someone!
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