| This is a side view showing the major production blocks of the Mk I/IV as well as the factory modifications.
The Block 10/20/30 have the original cockpit while the 12/22/32 have the Mk II style one. The Block 42/52 were renamed Viper Mk IV after the war. The 42 is the same as the 52 except the cannons are in the standard pylon mounts near the cockpit. It was renamed the Mk IVA. |