Hi GameOnJon as i read it what you said you are looking to mod which allows you to buy or make triple trailer and yes there is actually one which is created by an TMP staff.
The mod is on steam workshop so you have to download it via there, after you download it launch the game and active the mod (don't forget you cant active the mod if you are in multiplayer) after you activated click to "Purchase Trailer" and you will see all the trailers there
Mod Link : https://steamcommunity.com/sharedfiles/filedetails/?id=1692043273