83-84 kz550 shaft/spectre, 84-86 gpz550 rear airbox needed

Hi if anyone has the rear airbox from one of the bikes listed in the header and are willing to get rid of it, my gpz550 project bike is in dire need of it!

I looked all over ebay and Facebook marketplace for the airbox or a bike partout but none of them are in the US!!!

If push comes to shove ill make one instead and in that case ill need help with measurements. Thanks for looking!