Starcraft windshields are not unique to Starcrafts. When SC designs a boat, they look in a catalog, usually Taylor Made, and pick a WS that fits and looks right. Other boat brands do the same thing, pick from a catalog.
What I'm saying is measure and find any boat brand WS that fits and look good. I put a glass walk-thru from a glasser Larson (I think, been a while) on my SC to replace the original plexi bubble WS.