I have fitted my rear window guard to the 3rd Freelander.
Fitting is simple
Remove rear door panel
Fit guard to its mountings and offer it up to the door, get the guard central to the glass and mark the mountings. Fix with BIG pop rivet.
Now for careful measurement to drill the panel, measure 3 times, then drill a tiny pilot hole for the holes required, mark where they are on the bracket, (this gets around you measuring slightly wrong) then make the correct size holes for the guard and screws