Welcome to the gang Purpledravonfly, enjoy here and out in the playground.
I would just go to the local Joinery or cabinet works or maybe even the local handy man and ask them to make one up for you. Just take measurements with you.
If you know a Apprentice cabinet maker at all, ask him/her to make one for you. They would love a little cash job.
Keep Safe on the roads.
__________________
Live Life On Your Terms
DOUGChief One Feather (Losing feathers with age)
TUG.......2014 Holden LT Colorado Twin Cab Ute with Canopy
DEN....... 2014 "Chief" Arrow CV (with some changes)