I bought this air cleaner from Mancini then I bought this decal set for it off ebay I got the outer "340 Four Barrel" decal installed just fine. It's the center decal that is giving me fits. The center of the air cleaner is concave, but at the very center it's actually flat for about an inch or so around the hole before curving up. Now obviously a flat round decal will never set in there right. So I emailed them and the very nice lady said their "pro" said to cut a slit down the center of the decal so you can fold one side on top of the other and lay it in there without the decal folding up. She said she would send me a couple more if I needed them in case I ruined the one I had trying to get it to work. I cut the slit in it but as I figured, the decal still wont lay flat (looks bad overlapped like that anyway). Now tell me if I'm wrong but I think it's impossible for a decal to lay in there flat since the very center of the air cleaner around the hole is flat and then goes up into a rounded concave shape. I can't picture how any decal could ever lay flat in that area without folding up all over the place regardless of how it is shaped or cut. Has anyone ever had any luck with this?