Chains? Not sure what you mean. If you mean chains like you would put around a tire to give you more traction on snow and ice...they definitely wouldn't have chains on a tracked vehicle for that use....they wouldn't last too long.

Tracked vehicles normally have grousers for extra traction. Basically a metal plate with usually an X in steel welded perpendicular to the surface. These would be attached where a rubber pad would go (either over the pad, or replacing it) to give the tank more traction.

The Meng kit....likely going to be in the $55-$60 range Canadian. If you are going to cut them up, I would almost look on Ebay or FB to see if you can find a couple of used KT kits, rather than cut up a couple of brand new ones.