Having had a good look at the camera itself I am pretty sure it sits out a touch further than the old one... hard to tell now of course...
Part of this assumption is that it is certainly more affected by rain as I found out yesterday... still at least now with the grid lines I still have some idea of where I am when the camera lens is wet...lol.
I might have to coat the lens so that water streams off it.
Which reminds me.. I need to re-set the time and a few other settings on the head unit... seems they had it off for an a while and didn't re-set the time.
Strange that radio pre-sets and BT pairings all stayed intact though.