Just finished the HobbyBoss Pershing and there are a couple of things to know. The kit goes together very well and does come with a complete engine compartment (including two PE screens). The big problem with the kit is that the vinyl tracks are one link too short. The way that I got around that was to not completely overlap the tab with the holes, on one end of the track, with the pins on the other end of the track. this does leave a gap of one link but I hid it up under the front skirt just behind the idler. It is completely invisible, especially if the tank is mounted to a base. The .50 cal. MG could stand to be replaced, or improved with a new barrel. The kit doesn't give you the tow cable or the brackets that hold it on the rear panel. The kit does have all of the torsion bars for the suspension. If you're careful during assembly, you can have a semi-workable, or poseable suspension. The shock absorbers are two piece, but have to be glued into position. If you figured a way to make them movable, you'd have a working suspension. That said, despite the bugaboos, I enjoyed building the kit and am quite happy with how it turned out. Hope this helps.
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Al