1. Original San Andreas Car model
2. Open 3DS Max
3. Maxscript -> Run Script -> GTA_DFF_IO (Kam's DFF Importer)
4. Import DFF -> Any car example that bravura.dff (There I can see it's already bugged like in the picture)
5. I select whole model
6. "Select COL3/COLL" -> Another same model.dff
7. Export DFF
8. And also in game it's bugged like that.
So how to solve this? Nobody knows?