When I scratch built a Hetzer back 10 years ago in 1/16, I made the lower hull out of metal and the upper was cast in resin, and the tracks were from a 1/24 Panther....BUT... so they would hold up on the battlefield, I had to drill out the links and insert metal pins.... this requires paying close attention to the tolerances. Otherwise you can end up w a wiggle bc one track is longer than the other...lol. Cute... but irritating!!! I made the fenders and other parts from brass.