I was looking for a disc brake conversion for my 39 jc truck and found an article on the stovebolt tech tips.but I just can't fully understand it.he got his parts from a nissan hardbody truck which is awesome because it keeps it 6 lugs and that's what I want.now the article says to measure the seal and bearings id and the spindle od.and he says to blue it? What does that mean? Any and all help is always appreciated.
