http://s1003.photobucket.com/user/callmedh/media/check%20arm/DSCN2856.jpg.html?sort=3&o=0

I would like to know if this is a passenger side or driver side check arm? I no longer have an AD truck to check it against, and am sorting through some old parts that are left over. I tried to find some pictures of check arms, trucks with their back doors open, etc., but no luck.

Maybe someone can post pictures of their check arms, or just let me know which side it is for.

Thanks!