Thanks guys. I have been trying to locate my old Bendix brake catalog but have had no luck. And now-a-days there are no old paper catalogs at the parts houses to do any research. They pretty much look at you like you are from Mars or something if you tell 'em what you're planning on doing.

I know I would have to replumb but was planning on replacing the steel lines and hoses anyway so that's no big deal - just buy the dual circuit set.

Well as this progresses I will keep ya'll informed.