StSanta: the Hurricanes used in BoB were Mk I.
The Mk II was made as a fighter-bomber, since the Hurricane was obviously inferior in performance to German fighters.
It had a more powerful engine(Merlin XX), all-metal wings and the ability to carry 2x500lb bombs or 8x60lb rockets.
4 different gun packages were fitted to the Mk II:
a: 8x.303in
b: 12x.303in
c: 4x20mm(early ones had Oerlikon type cannon, later ones had the Hispano Mk I)
d: 2x40mm Vickers "S" cannon + 2x.303in(for aiming assistance)
It has a blistering top speed of 328mph at 18,000ft - and takes over 9 minutes to climb to 20,000ft.