Mike, I think I'd call Jerry or Jason Slover at Pete & Jake's and get everything you need in one stop shopping, knowing it's all gonna fit. Is your buddy keeping it totally stock other than the juice brakes? Pretty sure that the spindle you have to have is '37 to '48, but if he's wanting to keep the original wheels you may be looking at an adapter. Bottom line, Pete & Jake's makes or has made the spindles you'll need, as well as being to help put together other parts that you need. They have a basic brake kit for $399, not including spindles, and they know the pitfalls you need to avoid, too. Might be a good value approach.... 816-758-4504.