Bring your LP BFG down to a store (Davis, Swee Lee?) which sells Gibson-style truss rod covers, pick a few which you fancy, maybe see if they cover the truss rod cavity, and if there is any issues with drilling holes to screw it securely.
If you're confident in handling a hand drill and knowing what drill bit size to use, then power to you. If not, find KC at Maestro / ZenGuitarwerkz.