Not sure if I like it
Well, I have not installed it yet. To make it fit without the lock tongue hitting the existing plastic surround,the surround has to be taken off (or so it appears) and there is no washer to fit behind the new door assembly to keep it water tight. The locking mechanism could easily be pried open with a tire tool-it is not strong at all.
So, before I start taking the current surround off and start drilling holes in the fender,I am going to decide which one would I'd rather have a thief destroy and then I have to replace, the $15 locking gas cap (if it causes no problems) or the $100 poorly made billet aluminum deal.