It looks like the Raybestos and the Dr Diff are the same except for price. Am I able to get just the 4 to 2 bolt adaptor and longer rod separately? The Raybestos is a lot cheaper and looks readily available at any parts store.
depending on the master cyl. (think i used one for something like a 85 diplomat) the alumn 2 bolt matster cyl is drilled shallower for the push rod. the adapter makes up for that. so you just use the stock disc push rod.