Dont know if its posted on yet, but CFM now has an aluminum aftermarket airbox. It looks fakkin sweet IMO. But i'm not sure from the description whether or not it would require the adapter for the K&N filter. It says it mates up for the K&N or a UNI, but nothing about the adapter. Still looks sweet though. http://cgi.ebay.com/ebaymotors/ws/eBayISAP...item=1858736475