Even A Blind Squirrel.......
I really wanted to have the urban billboard from TheSims3-Late Night for my Bridgeport neighborhood, but never dared to make a start on converting it.
Well, never say never.
I happened to come upon TheNinthWaveSim's fabulous video tutorial (www.theninthwavesims.com/2012/07/the-sims-3-to-sims-2-object-conversion.html), and while watching it about twenty times the initial "Eh?" turned from a "Hmm" to an "Aha!".
The result of some hours of fumbling around can be seen on the following pictures: a huge decoration object that is cloned from the base game's "Immobile Chimes" (FaceCount=1848, VertexCount=2968).
Download here:http://www.mediafire.com/?4a3gmacy3d9625t