Qustion about options for upgrading my braking system. My '66 GT still has the original master cylinder. Although it has been rebuilt as well as the discs, drums and new lines, I would feel safer with a dual resevoir. Is the only answer to go to a power booster or can I get a dual res that is manual?

 

Nah, there are about 15 different dual master cylinders you can use. Here, do some reading.
http://www.chtopping.com/str395/str395.html

 

I did the same upgrade on my car. After researching I found the best fit (they're all good) that would maintain a "stock" type of appearance and retain the manual brakes was the MC from a 1974 Maverick with manual disc/drums and a Ford type disc/drum combo valve from NPD.
The MC bolts right in and is available from NAPA for $75.00. The combination valve is as I said available from NPD and is a bit pricy at $120.00.

Mount the valve where the old distribution valve was in such a way that you can hook up the rear brake line without modification. Fabricate to fit the MC/front lines, it's easier than messing with the back. NAPA should have everything you need including short brake lines with the proper fittings to connect the MC to the combo valve.

The system works great, is a real safety improvement and was cheap enough. Good luck.

 

Oxnard- Napa has the lines with the fittings already atttached? If so, that's awesome. I've heard DIY double flaring is a pain.