I have not studied these videos in detail yet, but I can make two points;
 The wrecked hull, long thought to be "121", is more certainly identified now because the rear right mudguard has its central rib removed - necessary on "121" because of the extra box they attached there.
 The turret lying on the truck bed looks very similar to one in another film reel that we've known about for years. The air intake grating seems to be lying inside both of them, so this is also "121".
Tiger research tweets