Is there a difference between 71 and 74 disc brake components? looking to convert

I have the setup so I would move the calipers to the rear? So basically I would have to switch the spindles around to the opposite sides?

Zhandfull I think you misunderstoof I bought the 74 scamp stuff for the 67. I have the single calipers piston ucas lcas ball joints everything even the prop valve.