Right before I bought my SVT, the previous owner bought one of the ebay factory-looking grilles to replace the aftermarket grille on the car that had broken mounting tabs. He gave it to me and I installed it, and my experience was exactly the same as Sprebound's. The rubber strip on top isn't secured in, just held in place by little plastic fingers that it pulls out of easily. Also, mine didn't sit straight in line with the headlights. The passenger side stuck out ahead of the light and in addition to looking funny, it made the hood close behind the rubber strip instead of on top of it. Also remember that the ebay ones don't come with a badge, although they have a flat area with holes to put one on.
However, all these fitment issues are VERY easy to fix. I glued the rubber strip in place so it won't slip out. The crooked fit was a simple fix of cutting a very small notch in the passenger side mounting tab so that that side could slide farther back. This fixed the rubber strip in front of hood issue as well. Finally, I picked up a ford badge from ebay and epoxied it on. With a tiny bit of work it looks perfect.