Yes, all the early Dragon kits have the diecast metal upper and lower hull. The Panthers are particularly frustrating because the hulls will not mate without some filing of the metal. Also the tracks are too tight and since all the suspension component mounting points are metal, you cannot cut off the idler wheel or sprocket mount and move it inward to give the tracks some slack.
I believe their Panther line labeled "Armor Pro" are the ones with plastic hulls. Their Panther kits 7205, 7206, 7207, 7230, all came with the diecast hulls. 7252 was the Panther with the plastic hull.