Hmm, you'd have them de-stickered obviously! They remind me, like Snoopy of the stuff you used to see on the likes of a gravel rally stage cars. I'm sure they real ones are optimised for cooling, whether the Ronal is all show though I dunno?
Not sure how they'll look on a MKV, I saw one on similar looking 18" Schmidts and they just looked lost.
This one is deigned for the job
And a car on THs