I HAVE A2000 FORD WINDSTAR STARTER WENT OUT REPLACED IT WITH 2 OTHER STARTERS THEY DID NOT WORK SOMEONE TOLD?

I was told that the year starter was a canadan starter and is not innerchagable i would have to use motorcraft is this correct

Help us out bit here and tell us what the windstar is doing wrong.
And what size engine so one of us can make an attempt to look up a starter.