would an accord coupe front grille fit in a sedan?

No. They're two different grills.

http://www.egmcartech.com/wp-content/uploads/2007/08/2008_honda_accord_coupe_official_image005.jpg

http://www.automedia.com/NewCarBuyersGuide2008/photos/2008/Honda/Accord/Sedan/2008_Honda_Accord_ext_1.jpg

^ +1 on that..no way that will work

i want to change the grille without doing mesh or billet, they just look ugly

why dont you just black out your current grill. that makes the grill look more mean.

like he said...get the chrome color matched and black out the h