Car_Helmet.gp4

Hi guys I wanted to change the helmet I have been using to incorporate into the new mod. I got the Bell HP7 shape but it doesn't have the car_helmet files included. I tried putting it into the game by renaming the file and I get white textures. Is there something I'm doing wrong or do I need to have the car_helmet files also with the actual shape I had downloaded?

Thank you all

Tim