Sundancer was in a small plant on Hwy 5 just north of Lebanon, if I recall correctly owned by the Faulk (sp?) family. Think they shut down during the difficult times for the marine industry of 2008-2009. They were a solidly built toon in their time and know of one marina on Table Rock that chose the brand for rental boats because of durability. Last I knew they were one of only a couple brands that still used U shaped logs instead of round logs. Understand your concern but on a 2002 any original factory warranty isn't available and the engine is the greatest risk any way at this point that's where you might focus some of your scrutiny. In general pontoons are assembled from parts that are available through other sources with the exception of upholstery and the fabricated aluminum components which can be brand specific. Look the boat over closely on top and underneath the deck for structural integrity and overall condition. Then consider taking it to a dealer your trust for an engine check out and make your decision based on all of that.