Well my car used to be totally debadged but i got a little bored and added a few bits lol.
On the rear, i added an OPC Line badge. I like it as hardly anyone knows what it is. I know my car aint an OPC, its an OPC Line badge in homeage to the prototype OPC Bi-Turbo CDTi they made a while ago.
I also like the euro syle stickers you see on some vw/audi cars, couldnt really find any so designed my own. Not sure if i like it tho, it will stay on till i make my mind up lol. (it says "remapped - diesel power"). On the top left of rear window.
I also put on some OPEL decals onto my painted calipers to freshen it up a bit.
Lastly, i have it booked in for a custom exhaust next month, straight through with no boxes, just a tip