I have a GNX louver on my Sy, only on the pass. side currently. My truck came with it and some friends say I need to put on on the drivers side also to even it out so I am looking for one also. Mine is installed just like the GNX so it directs hot air out of the engine compartment. You can see some pics of it on my webshots site below, I personally like the look of mine better than when they are put on backwards but thats just me, good luck in your search.