With OpenIV, navigate to: \Grand Theft Auto V\mods\update\x64\dlcpacks\ch47d\dlc.rpf\x64\levels\gta5\vehicles\vehicles.rpf\


>open "ch47d.ytd" (make sure "Edit Mode" is toggled on at the top of OpenIV)


>Add the ch47d_sign_4.png file to the .ytd and save it. Alternatively you can replace any of the existing liveries (delete all but ch47d_sign_1 and replace that one with the UK one if you only want to have a UK livery)

