You could email the sender and try and replace the set you got with the Koup set. That would seem to be a little work though. If you don't think it looks that bad then go for it. As far as removing the K emblem do you mean once you put it on and then get the correct size you would be taking it off? Do the same process you would in removing the Kia emblems. Heat gun or hair dryer and soften up the glue and use some fishing line to peel it off. There's a do it yourself guide in the DIY section on removing emblems.