Interesting that you appear to have the deeper slot at the front Andi, I found more depth at the rear to suit my 5 link Roadster.
![[Linked Image]](https://i.imgur.com/lrVuzUD.jpg)
ETA: I agree with Dave W although in my case due to build tolerances. I found lateral asymmetry of 5mm in position of upper links on my Roadster when measuring for tool tray clearance. Ironically it was later discovered the back axle was around 5mm out of true with chassis whilst fitting SSL coil overs. Moving it over was easy given panhard rod, but then wheels were not aligned with bodywork so a compromise was found.