Think all MkVIII,s were setup for the tropical climates as the majoritory of them were used in Asia or the South West Pacific defending Australia.Best site for them is here but you have to be a member.. RAAF Spitfires in the Pacific War
There's a chap on here called Clave
he does alot of top line drawings - if he's not up you could alert him with a PM and ask if he's got a Mk VIII lying around anywhere