Brilliant news Smoo.
im sure Motability won’t have an issue with it as it’s being done by the dealership, it may take a couple of days to confirm paper work as they will need to inform RSA (insurance company) of modification, a little bit of two and throwing, but they have an internal live back office system so hopefully will all be sorted in no time so you can enjoy your freedom and independence a fully suitable vehicle provides.
And well done for pursuing and sticking with it,
Enjoy