Hey TK, just tried implementing your pack into my server, and the only issue I found was on NF1, the '10 charger I believe, has several random textures on the top of it. I determined that it was not coming from the livery, but from the model and/or YTD itself. Can you let me know if it may be a problem on my end?
Do you have the Luxart script? Luxart Vehicle Control is made specifically for FiveM, it is essential for non-els police cars. https://forum.cfx.re/t/release-luxart-vehicle-control/17304