Any idea of this mod?

[Tuntun]

Hello guys,Do you have any idea how to add my car mod? in the car mod i got this files:

[Dobby]

Use GTA img tool, or use SAMI to install the zipped folder.

[Dr_dog]

Use GTA img tool, or use SAMI to install the zipped folder.

Those are the tuning parts. they go to gta3.img with IMG tool alongside with the car model itself
Alci's IMG editor 1.5 is probably best tool to install multiple files same time without having to remove old ones.