Huge thanks to both you and @diego.ba7op. I somehow did the same thing even before starting that thread, but my code did not work xD. Changing wheel setup is a proper solution because Chaos vehicles actually use them to create ingame object anywa. So for anyone who will stumble upon that thread summary goes as following:
- Access to wheel setup and potentially vehicle setup will allow you to change almost all vehicle data you may want. Beware though that you will need to re-init the vehicle which will nullify velocity and contoller inputs.