I am thinking about converting my single master cylinder to a dual line unit, has anyone here tried this. I found a block http://www.summitracing.com/parts/RSD-RSBB123/ I was wondering if the booster must also be changed. And would a 67 and up booster work?

 

Does you booster have 2 or 4 bolt master cyl attachment Probably 2 So any big car 4 bolt booster should workwould also need a master cyl I would guess from a drum brake Duster/Dart. Need to make your own lines

 

It is a 4 bolt master cylinder. Hopefully all will line up... Will let you know how thing work out.

 

I converted my 66 300. It has a four bolt master. I just went to my local parts store, got a 67 Chrysler drum brake master and it bolted right in using the original booster. You will need a couple of fittings for the new master. A blue secondary fitting 9/16 thread, Mopar 6026888 and a violet primary fitting Mopar 1/2 thread, Mopar 6026887. Got them from a Chrysler dealer but they had to order them in. A plug to block the tee where the old line went to the rears and a union to connect a new line from the master to the original line to the rears.

Got all this from a great article in Mopar Action on dualing brakes. The issue was April 2004.