reasonable review here

http://home.comcast.net/~ragenpl/nacra/Why_Nacra55SL.htm

spin shot here

http://www.gtsailing.org/images/nacra5.5.jpg

maker's info here

http://www.nacra.us/nacra/55sl.htm

think they were all foam cored so you'd want to check for soft spots on the hulls just forward of the main beam, as you would on any foam cored boat

nacras generally pretty sold, fast boats with lots of hull volume to resist pitch poling and carry extra weight well. the daggerboard models point well but as they are race boats have more adjustments than many recreational sailors want

adding a spin to any cat generally costs 1-3thousand dollars so if this boat has one it's a plus

parts generally good

this url will give an idea of price

http://www.sailingtexas.com/snacra55c.html