IIRC, nothing on my certificate of origin indicated that my X14 was an X series. It just said Prostar 214. But my original invoice from the dealer and build sheet stated X14. So I do believe that an X80 is technically a Maristar 280 with an X80 package. But the boat in this thread does not appear to have the X package as others have pointed out. The dash is one of the telltale signs.
40th Anniversaary X14
'97 Prostar 190 - LT-1 (For Sale)
Prior boats - 2009 X14, 2008 X14, 2005 197, 1988 Tristar 190, 1989 Prostar.