Check out Great Lakes Skipper either their online store or ebay store. They have a ton of hard to find OEM MC decals. I just picked up a transom set for my 2000 x star from them last year.
Current: 2008 Super Air 210TE
Previous : 2000 X-Star, 3000lbs ballast, LTR 330, Acme 1235 14.5X14.25prop. 1200 hrs of flawless fun