Manual brakes, always my favorite. Was this upgrade as simple as using a MC from a 1968-69, thus no need for mental gymnastics on bore calculations?
Yep, the late 67-68 cylinder is the same bore as the single circuit one. Brakes feel the same as with the single. You just have to fabricate two short brake lines. Also my power bleeder fits the reservoir on this one. Before I was doing gravity bleeds that took forever.
I toyed with the idea of adapting a 140 style brake booster like they did with the '69 and '70 cars outside the US but this was just a simpler way to have some redundancy in the system. Still might do that someday, but I'll probably try EBC green stuff pads or something first if it becomes tiresome.