Big bump????????? Good Luck. Would be cool to see it done.
In my opinion you may have better luck asking for such a trade on a Polie site (or general sled forum). Those guys (for the most part) see no value in a 4 and may have some connections that could hook you up.
Guys here (again for the most part) won't give a Polie trade a second thought. They love their 4's and the personal value to owners here is much higher than elsewhere. Just a thought.
Good Luck, opsled