Looking for airbox info - resto project

So, I've got a mostly complete basket case to restore here. 'Mostly' because it's missing the complete airbox. I think I'm going to have to try to adapt or remanufacture something to fit. I'm not fussy, at this point anyway, with trying to come up with some kind of pod filter set up.

Can anybody tell me if any 'modern' single shock big inch bike, that you can still get parts for, has a right side airbox? So far with people I've been asking locally, the answer is no. I don't have a broad knowledge of all manu setups over the years.

Alternatively, if anyone has any leads on where I can find an original airbox with boot for a 1986 Can-Am Sonic (560 4 stroke), well, that would certainly help too.