I swore I wouldn't do the dual MC upgrade until the fall, but I've changed my mind and am going to go ahead and start ordering parts. Where did you all buy the mount from?
I've found two so far:
https://www.performanceonline.com/1955-59-Chevy-Truck-and-GMC-Truck-Master-Cylinder-Adapter-Bracket/http://www.speedwaymotors.com/1955-59-Chevy-Pickup-Master-Cylinder-Adapter,34153.html
Mine would go on a 55.2. Went down to my FLAPS yesterday and looked at a dual MC from a '75 monte carlo (drum/drum) and the things is huge, bigger than my current single MC. I assume it's a tight fit? My 55.2 is drum/drum.
I've got Cletis' article already printed out, just want to make sure I order the right parts the first time.