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Not sure I understand you? The Puma came first, but assume thats what you mean? Floor plan is similar, but not the same. The engine in the sport ka is totally different, lower on power than the 1.7 puma, not to mention the puma having the most sort after gear box of any small ford of its generation. Have you driven both of them back to back? There is nothing wrong with a sport ka, but there is a reason so many more pumas are used as track cars (other than there being so many of them dirt cheap) than sport ka.
The street/sport ka use puma suspension and same floor plan. Which came first and which of the two was the development.