the Nacra parts catalog and 2001 pricing guide (note this is pretty old) state that a fully assembled 5.5sl front beam is $525. There's not much more detail, but that probably includes EVERYTHING - like mast post, dolphin striker, hardware, beam straps, beam bolts, etc. You just need the aluminum extrusion that is drilled for the major components. Also of note is that the catalog lists a different part number for the 5.5 uni and 5.5 sloop front beams - although that's probably only different because of different hardware configurations.