Is there a way to replace the sheriff stainer with a mapped vehicle or any other model? Can I rename the mapped stainer and drag it in as a replacement or does that not work?

You can rename the vehicle file to replace any model file, just be aware that the game will still see it as the vanilla car in regards to sound, sirens and engine handling and engine sound, unless you edit the corresponding files. I do not know which files these are, but I think it's the handling.dat files. There should be plenty of guides for GTA IV vehicle modding and replacing.

You can rename the vehicle file to replace any model file, just be aware that the game will still see it as the vanilla car in regards to sound, sirens and engine handling and engine sound, unless you edit the corresponding files. I do not know which files these are, but I think it's the handling.dat files. There should be plenty of guides for GTA IV vehicle modding and replacing.

Sorry I posted this in the wrong forum. This was meant for GTA V, not GTA IV

Sorry I posted this in the wrong forum. This was meant for GTA V, not GTA IV

I've moved it for you. Please take care to post in the correct section in the future.

My reply still stands though, it should be the same for GTA V, although it may not be as well documented. 

I've moved it for you. Please take care to post in the correct section in the future.

My reply still stands though, it should be the same for GTA V, although it may not be as well documented. 

Thank you!