correction
I see, I'm sure it looks good like the other blacked out ones on here. Do you have a DIY write up on how you did this? I saw your diagram and saw the grill on your X, but I'm trying to picture clearly how you assembled it together. In some ways it seems easy, but in other ways it looks hard to do.
I worked like a madman on this project, and it only took two days but several hours both days--I only ate once LOL. Unfortunately, I didn't take photos of the process aside from one pic I sent to a friend when he asked what I was working on at the moment.
Here is the grille after reassembly, sanding, smoothing, and initial coat of primer.
http://i1240.photobucket.com/albums/gg493/S-H-A-D-O-W/Modifications/1_zps80729cb3.jpg
Sorry my one and only pic during the process sucks.
There are no seams and I tried to make it look OEM. The only thing that seems "off" about it is the diamond pattern in the exact center/top portion of the grille. There are two diamonds that are clearly smaller than the rest. But every single edge and angle lined up perfectly. Based on the curvature of the bottom vent space of the bumper, the width and height of the vent space, the slanted angles of the diamonds, I had to ensure symmetry at minimum, otherwise this whole thing would fail.
The vent space is not rectangular, but actually trapezodial. After disassembling the Sport grille I bought and removing the diamond piece, I removed the center polygon piece that "held" the two sections of diamond patterns. I thought it was in the oval area that encircles the badge area as shown in my diagram. But after looking the scrap pieces, it was not. It was further down the piece.
Then I fused the two diamond pattern pieces together. Despite a near perfect fit, about a 1 inch gap remained left by the recessed oval portion. Since that part looked ugly, I was able to remove that center section and had enough diamond pattern to work with (aka the useable section). After removing the center section, I was left with two "useable section" pieces--both of which are mirrorred copies of one another.
Then I kept "trimming" away on opposite edges of both pieces to reach the exact measurement of the vent opening; while simultaneously ensuring I had enough slack left to maintain the continuity of the pattern. To clarify, if I trimmed an inch off of the left piece, I would cut the same amount but in a mirrored fashion off of the right piece.
For mounting, I used the already existing plastic tab pieces. I trimmed them, heat-molded them, and simply drilled holes in them to place bolts. I removed my bumper to bolt them in place in front of the existing vent grille (it's barely noticeable behind my mod anyway).
I just took this photo right now for you.
http://i1240.photobucket.com/albums/gg493/S-H-A-D-O-W/Modifications/B_zpse37ced2c.jpg
This pic shows two of the scrap pieces left over. The top piece (resting on top of my mouse) was from the middle "oval" section that was cut out first. Both pieces show the plastic tabs used for mounting circled in green. The red circles signify some adhesives I was testing for fusing it all together.
Honestly, I don't know what was worse... the cutting and trimming or the daunting task of fusing the pieces together.