@bmw740il are you using the addon or replace method of the vehicles?

I know my way around installing mods, especially car mods, but I can't figure out what the issue with these 2 is.

Challenger:
https://www.gta5-mods.com/vehicles/2015-dodge-challenger-add-on-stock-shaker-hellcat#comments_tab

Charger:
https://www.gta5-mods.com/vehicles/2016-dodge-charger-sxt-r-t-srt-392-hellcat-add-on-replace-hq

-I am installing both vehicles using the addon method-

The cars spawn in fine, but they both have no tuning mods. they are in the correct folder and all the files are present, but they won't show up in menyoo or LSC. I made sure the modkits were both the same in carvariations.meta and carcols.meta, and they are. can someone help resolve this issue?

I have an issue when replacing the "fbi2" vehicle. usually this is the granger with 1 driver and 2 hanging off the side. My issue is the car i am replacing it with can't fit anyone on the side, so they just don't spawn.

Is there anyway to change what seat the peds spawn in that specific car? all the other police vehicles are working normally.