Can someone ID these KZ1000 airboxes?

I have these two airboxes I'd like to sell... problem is I don't know the year / model KZ1000's they came from. The one that has the more rounded sides, I'm pretty sure came off of a 1977 LTD... but not positive. The other one is very similar, but is more angular. Figure it must be a year or two different, maybe an A model??

Side

The right one looks like my 77' KZ1000A box and the left one reminds me of my 78' KZ1000LTD

That sounds pretty good to me- thanks

Those look just like the dual airboxes on my '79 KZ1000ST They are used in tandem. I'll bet it's the same as the MKII.

www.partzilla.com/parts/search/Kawasaki/...R+CLEANER/parts.html