I'm looking for border patrol/Immigration and Customs Enforcement mods (vehicles and characters/peds) but can't decide on what to download. I prefer lore-friendly mods so what would be GTA V's equivalent to the US Border Patrol and the U.S. Immigration and Customs Enforcement? Also, by lore-friendly I mean that I prefer not to have any vehicles from real-world automakers.
Is there any way of adding only the RDE vehicles to the game instead of the entire mod? I'm mainly interested in the Coast Guard, Border Patrol and Port Authority Police vehicles.
Is it possible to convert replacer mods to add-ons? I'd like to get the Vapid V450 ambulance but it replaces the default/vanilla ambulance however I still want to keep the vanilla Brute ambulance so how can I convert the V450 into an add-on instead?