Q1 The above has gone on the front Diff of my RRC, how easy / hard are these to change? 
Q2 I also have some play at the bottom of the drop arm, how do I renew this, is there a bush to replace or has the arm got to be changed?
Q2 A:does the drop arm have a ball joint  :?: 
B : or is the ball joint on the drag link bar  :?: 
A:replace ball joint as they are only £8 ish to buy and fairly easy to change
B:change ball joint on the end of drag link even easier than above
and the difference in steering will be unbelievable :shock: 
I know only just changed mine  :D