Hi i have a 2006 puma and the seats are starting to rip in the seams question the new 2014 seats are the same size as 2006 ? do they have springs in them ? i notice from pics the middle seat looks smaller are they more comfortable than the 2006 ?my boat does not have under seat storage so will they retrofit to my boat ? is it better to reupholster or buy new seats any thoughts would be helpful thanks for the help