I think it might be a great help to the other PlusFour/Six owners to do a before and after measure using the diagram provided by RichardV6 ?
This would allow future readers of the thread to compare their ground clearance with yours (before) if they have younger cars etc ?
Just a thought as you are being so helpful in sharing this.
Great idea as the sagging suspension issue looks like it is going to be a problem with the CX vehicles as well as the trad's.