Yo @roland
I revived the Babylon Toolkit-7.0.0-BULLET for Legacy Ammo.JS Physics
Check this sweet workflow I use for driving games
Note: I am waiting for @Cedric to get Raycast Vehicle Support for Havok Physics
Until then i still have to rock Ammo.js for advanced vehicle physics
No way bro!! WTF?! What kind of magic is happening here?!! 
Ok, I need to definitely try out the Toolkit. Are there any recommendations on the Unity version?
2022.2.4f1 or Higher should work nice.
Note: Some version in between 2022 and 2023 removed Newtonsoft.dll (Version 13)
So you may need to put it back.
Current 7.0.0 Builds: UnityExporter/Redist/Editors at master · BabylonJS/UnityExporter · GitHub