[Izzmo]

Google would eventually find out, they watch their PR:8-10 sites VERY CLOSELY. So, yes, they would find out very quickly about your site.

But to answer your question, places like PageRank.net are doing it and showing the "actual" pagerank, not saying it's higher. But, I ask you then, are you trying to show your "actual" or put it up higher than it is?