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Quite possibly the first stock bore/stock stroke to do it:
http://www.moddedraptor.com/community/raptor-700-mods/5512-dyno-bos-new-t-rex-port-1-valves.html
http://www.moddedraptor.com/community/raptor-700-mods/5512-dyno-bos-new-t-rex-port-1-valves.html