Mazdaspeed3 10-13 ST Manifold Non-PI Adapter KitDamond Motorsports Mazdaspeed ST Manifold Adapter Kit for the 2010 2013 Mazdaspeed3 We at Damond Motorsports have developed a kit which allows the factory Focus ST intake manifold to be adapted to fit the DISI head. The Factory ST manifold has been proven to flow incredibly well and evenly, and is available at a very low cost. This kit has been put through extensive testing on the street, the track, and the dyno to provide a great solution for more