Pz. Kpfw. IV Ausf 1S Life Extension Project (VI. 1bs) Reference to the Challenger's LEP (Life Extension Project)
Armor: Main Armament: Propulsion: Weight: Top Speed: Crew: 30 mm/15 mm/10 mm 105 mm L7A3 L/52 rifled gun (stabilized) 50 round ready rack MTU MB 837 Aa V8 (500 hp) 28.8 tons 70 km/hour 4