Help: Difference Between Spitfire Mk I and Mk V

I want to say that the Mk.I and V had different spinners. The Mk.Is could have the DeHavilland or Rotol prop, while the Mk.V introduced a new type. Different blade shapes also were seen on the Mk.V. Also a more blown Malcolm canopy hood was introduced as well. Exhaust stacks are another area of possible differences. 

The first Mk 1's had a wooden two blade prop, but it didn't take long before they switched to a metal 3 blade version on the 1a. The two blade would only be appropriate for pre-war period

Didn't the Mk I and Mk V have different props?  It has been a long time since I built a Spit, but seems to me I remember the Mk 1 using a two bladed prop, or something like that.

The main differences between marks are the engine and wings. On the early marks the difference in engine wouldn't show, but the wings are a different matter. It would be far easier to get on the net and buy a Mk 1a rather than trying to convert a Vb, as there are plenty of kits of most marks of Spit out there

More than just clipping off the cannons. Different panel lines and bulges. Also a different oil cooler.