To support your MK.2 comment Greg, if someone were to make a new mold kit allowing you to built the MK 1 to the Mk 6, they would sell millions!!
CF-100 Mk 1 : The first two prototypes.
CF-100 Mk 1P : Proposed photo-reconnaissance version. Not built.
CF-100 Mk 2 : Ten pre-production aircraft.
CF-100 Mk 2T : Dual control training version of the CF-100 Mk 2. Two built.
CF-100 Mk 3 : Two-seat all-weather long-range interceptor fighter aircraft. First production version for the RCAF. Eight .5-inch Browning M3 guns (200 rounds per gun) in a forward firing ventral gun pack. 70 built.
CF-100 Mk 3A : CF-100 Mk 3 sub-type, powered by two Orenda 2 turbojet engines. 21 built.
CF-100 Mk 3B : CF-100 Mk 3 sub-type, powered by two Orenda 8 turbojet engines. 45 built.
CF-100 Mk 3CT : One CF-100 Mk 3 converted into a dual control training aircraft. Later redesignated CF-100 Mk 3D.
CF-100 Mk 4 : Two-seat all-weather long-range interceptor fighter aircraft. Eight .5-inch Browning M3 guns (200 rounds per gun) in a forward firing ventral gun pack. Plus two wingtip pods of 29 x 70-mm (2.75 in) "Mighty Mouse" fin-folding aerial rockets. One pre-production aircraft.
CF-100 Mk 4A : CF-100 Mk 4 sub-type, powered by two Orenda 9 turbojet engines. 137 built.
CF-100 Mk 4B : CF-100 Mk 4 sub-type, powered by two Orenda 11 turbojet engines. 141 built.
CF-100 Mk 4X : Proposed version of the CF-100 Mk 4. Not built.
CF-100 Mk 5 : Two-seat all-weather long-range interceptor fighter aircraft, powered by two Orenda 11 or Orenda 14 turbojet engines. Two wingtip pods of 29 x 70-mm (2.75 in) "Mighty Mouse" fin-folding aerial rockets. 332 built.
CF-100 Mk 5D : Small number of CF-100 Mk 5s converted into ECM (Electronic Countermeasures), EW (Electronic Warfare) aircraft.
CF-100 Mk 5M : Small number of CF-100 Mk 5s equipped to carry the AIM-7 Sparrow II air-to-air missiles.
CF-100 Mk 6 : Proposed version armed with the AIM-7 Sparrow II air-to-air missile. Not built.