sorry for slow response.
where did you find the drivers side one? i need it.
i dunno if i just bought an oem or aftermarket xtreme valence (aka air dam) from the junkyard , but the little brackets that go on the sides of the bumper looked very similar. the drivers side of mine had to be cut due to frozen fasteners and freezing temps unfortunately.
i would buy and try if you cant find the other side, but i believe the difference will be that the vertical bar on the interior portion of the bracket is slightly offset and thus will be in the wrong spot if you put the right bracket on the left side or vice versa. so it will be unable to bolt up properly if my memory is right. BUT my oem vertical bar was loose for 10+ yrs and never caused a problem....
off the top of my head: i think it would be real easy to cut the vertical bar off and tack it back on in the correct position if need be with spotweld/braze/solder/epoxy/rivet/selftapping screw/etc