Since the BT-82 tube is not currently available your best shot is to try and see if a BT-80 will work. At worst, you'll have an extra body tube for scratch building. Good thing that's the only tube damaged. In looking at John Boren's list of parts, they all are odd sizes/specialty tubes: BT-82, BT-58, BT-54, BT-83, BT-67, BT-18.

Guess the goal was an accurate 1/100 scale representation. Good luck.

P.S. How badly crushed is the tube? pics?