Hi Hub,
>Can someone tell me if the hurri IIC and the Spit's shared the same powerplant? If so, which models?
The Hurricane IIC had a Merlin XX series powerplant, and the only Spitfire I'm aware of with a Merlin XX series powerplant was the Spitfire III which didn't make it into series production.
(In a broader sense, all Hurricanes and most Spitfires were powered by Rolls-Royce Merlin engines.)
Regards,
Henning (HoHun)