Hello,
If you have a FiveM server and you are ready to pay for some custom scripts using the ESX framework, get in touch with me with your idea and budget, I can make you most likely anything you want.
I am a professional software engineer with some free time for gaming, owning a (popular) FiveM RP server for over 7 months made mostly with my custom private or optimized public scripts.
If you have any questions, PM me.
PS: I'm not doing any mapping, modeling cars (except creating fully bulletproof vehicles if they are unlocked models)