The only possible honey comb material I had in mine was two, the lower grill from the Toyota Matrix, although I already checked it it will not fit right, plus the honey comb is one part w/ the whole bumper. The 2nd choice and possibly might be the lower bumper grill from the Scion TC The measurments are close, but I haven't check on that one yet.

 

For the lighter color xb's I've seen some great looking mods to grills. Even the dark inserts look good on a light Xb. For mine the black grills made the front end seem like it was missing something so I got these brushed aluminum inserts from Street Scene. The quality is excellent.