I am a high functioning quad(C6-7). We have a 36' Southwind A that we had modified. Actually widened the original entry door with a 30". Wider door fit with no cabinet mods inside. We added a Braun under vehicle lift. It is not the typical way to modify but we wanted to avoid a second door for the lift.
Braking with hand controls is no problem. I found the steering at low speed a bit difficult. Parking, maneuvering, etc. We had reduced effort steering installed which worked out great.
I've driven full size and mini vans with no steering mods.
I don't have any visibility issues. The mirrors and the rear camera are fine for me.
