The kit does have a gaffe, unfortunately. The large cooling grill at the left rear of the engine deck is a specific modification for North Africa, and Dragon chose to mold it as part of the superstructure, making correction difficult if you want to do a vehicle in Russia. If you do a North Africa vehicle, use the radio operator's hatch with the large cooling vents, not the small ones, as that was also part of the tropical upgrade. The initial batch sent to North Africa appear to have all had a rack for smoke candles bolted behind the muffler, but photos show some delivered later in the campaign without them (Dragon doesn't include the rack, while Tamiya's Panzer II C kit offers you a choice, though their kit has no cupola, so you are limited to the 1940 campaign).
If you want to depict the Dragon Panzer II C in the Russian campaign, you can either saw out the large left rear grill and replace it with a recessed rectangular hatch with rounded corners and a single hinge (a fussy job), or you can just cover the area with stowage, as photos show that crews typically used that spot to lash down tents, bedrolls and such. And of course, use the radio operator's hatch with the smaller vents.