These aren't the perfect liveries and are just temporary. 
They don't look that good up close. Sorry about that.
I hope someone makes better one's in the future lol

Add them to z2879.ytd in mods/update/x64/dlcpacks/z2879/dlc.rpf/x64/vehicles.rpf
and save.

If you have any existing liveries with the same number, just rename the one
you want to add to a higher number to a higher number.