Need help with non-steam version!

I downloaded the Automation demo from the website to see if it was for me, and it is. However, i dont have the money to purchase the full game right now. I want to get some mods that work with the demo into it so i can get more used to the way it works, and so they'll be there when i unlock the rest of the game. I'm talking new car bodies, engines, and along with the relatively small stuff like grills, headlights, vents, wings, and maybe some turbo/supercharging if it's possible.
Any help with this would be much appreciated, i'm new to the forums and not sure where this kind of question would go, so i hope its okay to post it here.
Thanks
Any help with this would be much appreciated, i'm new to the forums and not sure where this kind of question would go, so i hope its okay to post it here.
Thanks
