Grigg,
Thanks for that note. The available space for a MC on a stock '36 PU is tiny. Fortunately I have a great local brake supplier who knew of a very compact tandem MC. By narrowing the mounting ears I was able to squeeze it in.
All that remains to do is plumbing the new MC to the lines that exit the "T" fitting on the right frame rail. That's why I'm researching what that plumbing should include. Information on that subject varies greatly and in some cases is totally contradictory. That's why I'd so much like to find someone who's actually done it.
And that "combination" valve you refer to may be applicable but it's possible that using the wrong item may be worse than not using one at all. Do you know of a specific drum-drum compatible item? Some of those are "hold off" valves that are for disc-drum applications only because they delay front brake application to keep the front wheels from sliding on ice. There's so much to know about this that it makes my head spin.
