If you want a large one, Wendell Hostetler has a plans and list cutters who can cut you a kit, as well as sources for all the components. Here is a link to his site:
http://www.aero-sports.com/whplans/

Ramon Torres has a composite kit available at:
http://rtaerospace.com/rc_scale.htm#...O2A/M337%20KIT

Other than the the KMP ARF, all that are available, are now listed in this thread, I believe.