Is there any out there? I have searched high and low, only found the wrc one part of the kit

There's some on Superskoda.com. Roof and boot spoilers.

There's also mark III Monte spoilers on there. Don't know if they fit the mark II but if they did I'd like one on mine. They look bigger and more sportier!

The mark III is about 10cm wider that mark II, I seriously doubt body parts would fit ...

The Greenline hatch gets one.

Not sure its the look you're after though