Welcome,do you mean celebration floor plan?Since it is a 2005 I would request from the owner the maintenance documents.a 2005 coach should have a 2004 shell you can verify this by the Prevost serial number,from the end of the number count back 8 digits and it must be a #4.Also a 2004 shell will have 365 tires on the steering and tag axles.since it was built in 2004 the tires and batters only have about a year left in their life,I would ask the owner to replace house,chasis and generator batteries and all tires.The market is very soft and Featherlite has a 2007 H3 for 999K,which has hurt all used Featherlite products,don"t believe the salesman,make your own offer,if they don't accept it go look at other coaches.