Hi bdubyah
Thanks for the mod and also adapting to A20.
I'm do a quick test and found a bug with the GolfCart. Once you get in, you can't do anything and the error appears. The other vehicles was (quick test) work fine.
...
2021-12-25T09:51:13 95.123 INF 16193 EntityVehicle PostInit [type=EntityVJeep, name=vehicleGolfCart, id=176], (1917.3, 58.4, 371.6) (chunk 119, 23), rbPos (1920.0, 48.0, 368.0)
2021-12-25T09:51:14 96.598 ERR [XUi] Error while updating window group 'radial:
2021-12-25T09:51:14 96.608 EXC Value cannot be null.
Parameter name: collection
Parameter name: collection
...
Have tried to find the error but my knowledge is not enough, sorry.