For the Best Results, i recommend downloading Vx5 Voltage's 1996 Vapid Stanier Mod, here's the link to their mod: https://www.gta5-mods.com/vehicles/1996-vapid-stanier-lspd-replace



MAKE SURE YOU USE THE MAPPED MODEL FOR THE CAR ON THE 1996 STANIER MOD, IT'S ON BONUS STUFF AND MAPPED MODEL!!!!! 



Download Instructions (addon/replace): Go to mods/update/x64/dlcpacks/lspd1996 (or lspd1996replace if your replacing) /dlc.rpf/x64/levels/gta5/vehicles/vehicles.rpf, After you did that, Open 96pol.ytd and 96pol+hi.ytd

how to install the livery: extract the 1996NYSPStanier archive, Make sure edit mode is on, after that Open the Car's YTD, You can either Drag and Drop or Import, To Drag and drop it inside, Open both YTDs, Grab the Liveries in the Liveries Folder and drop it in the YTD and Hi+ytd, to Import, open the YTDs and click the Plus sign on the top left, select all 7 liveries included and click Open, Hit save and you can close it, Do the same with the +hi YTD, after you done that, Enjoy your livery:D




OPTIONALS: If you want the North Yankton License Plates, Then go to lspd1996/dlc.rpf/common/data. Now open the carvariations.meta by right clicking it and click Edit, on the 96pol section, scroll down until you see "<probabilties> and <item>" and under that you will see "police guv plate" Rename it to "yankton plate" in lowercase, Save and now you can have fun:D