Sji doo did put 16" wide tracks on some sleds but the suspensions are the same so you can run a 15" wide one.
You can mount any skid undwer you sled you just need to know the dimensions of the sled it came out of.
The suspension holes from the center of the driveshaft.
Also from the top of the tunnel down to the holes.
The ski doo skid and poo skid are both great.I have put doo and polaris skids in yamahas.They are both really reliable.Make shure the doo has rebuildable shocks of you go that route.The polaris swithback 144" had tipped up rails which would be better for tail riding but if you riding strictly off trail then straight rails are better.