Yes they should, but you will have to fiddle around a bit with the fitting lugs as the EVO speaker holes don't quite line up with speakers of this size. They're components also which means you'll have to find a seperate location for the tweeter units both front and back which can be a bit fiddly to make look professional as well.
Must admit I'm talking from experience of the VII and am assuming there are no extra provisions for speakers on the VIII in terms of tweeters. From my experience of the VII, I'd be looking at fitting some good quality coaxial 16.5 or 17 cm speakers personally. Something like Infinity or some of the high end Kenwoods?
Sort of depends what else you're doing in terms of head unit, amplification etc. If you just want a straightforward install with head unit and some good speakers I'd be inclined to go with a coaxial speaker solution.
4WIW
Brian.