Hah, yes sorry wishful thinking / typo. RS41's I meant, not RS42's.
Anyone else interested, this is the guy who made them
http://www.ebay.com/usr/birks_place
The best part is he was willing to customize the top plate to the shape of the speaker. I whipped up a quick visio of it with measurement and angles sent it over as an image. Takes a few weeks once you place the order. Overall feels like a sturdy construction.