Hey, wondering if anyone has any info in regards to an airbox for an NC23 CBR400rr with Keihin FCR carbs?

All i can find is pictures of ones for an NC29 or the HRC air tray for the NC23 (very rare anyways).. not a full box

I also read of an NC29 HRC ram air box being modified to fit an NC23 with NC29 carbs. This seems to be my only option at this point..

NC29 box:



Thanks!