How can I change the vehicle data script settings?

[dltmdwns156]

Hello? I asked you a question about changing the GTA2 car settings
1. Is there a way to add a vehicle weapon to a regular vehicle?
2. Is there a way for a normal vehicle to be immune to bullets, flamethrowers, electric shockers, etc. like tanks?
3. Is there a way to add a setting where a normal vehicle is just like a tank and you're just smashing another vehicle?

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I'm asking about changing the GTA2 script. I downloaded the script pad and the compiler program, but I have no idea how to proceed after this. Am I writing and applying the script myself? Or I'm not sure if I just need to run the GTA2 file (BIL) as a pad program and modify the part with the vehicle data..
Please tell me how to change the script~!! Please!