I guess I have to agree too on this one!!!
Having said that, anything is possible if you throw a lot of money at it!
If you have a III and want to do something a little different then I suggest that you bolt a X turbo onto it. It is the only turbo in the range that is the right way round.
You will need to get a manifold made up but that should not stop you at all as there are a hell of a lot of bespoke fabricators out there that are up to the task.
Be sure to keep us posted as I am quite interested.
Do you have pics of the Evo you can post up for us???
El