Alax7 you are correct I was initially referring to you. If you wanted to use the CDC lower grille then this 02 LSE bumper would be the one you need. I am not sure that the lower opening is the same size or even shape on the Gen II. The picture post gives you an idea of the differences. Shape, opening size, trim, sidemarkers and other things are all different. As far as overall size I have no idea. I do know many people put the Gen II onto the Gen I. So they must be somewhat compatible.
Having said that, Adam said he did not buy the bumper off of someone on here. Ken from LSKoncepts is on here so it probably wasn't him.
As far as the original post if you can't or don't want to use the grille that was sent to you I am sure someone on here would want that bumper. They don't make it anymore from what I have heard over the past couple of years.