Hi guys After scrapping my beyond-saving RN16 a while back, I've been wanting another and finally landed one this week (build thread to follow). Unfortunately the steering box is due for replacement, it is worn beyond adjustment. Is anyone aware if the 68-71 will interchange with another 70's or 80's box? Alternatively if perhaps the internals are the same in the later boxes so I could use those to repair my box. Thanks for your input - I'm sure I'm not the only one with a worn steering box