Sims cab on narrow frame
 

Got my hands on an old Sims cab today (1970's), but it's in pieces. Would like to try to put it on my 124. Anyone have any idea how to assemble it onto the tractor? It has a roof, windshield, two upright support posts and a plate that goes over the hood under the windshield. Has snaps on the sides which seem to indicate it was meant to have canvas sides. I can post pics if it will help. Maybe I'm missing some pieces? Maybe it's not even Cub compatible. Any help greatly appreciated.