Hawaya Racing Products is changing piston manufacutrer from CP-Carrillo to Diamond Pistons. "Things change rapidly these days and recent management decisions at CP-Carrillo has made us uncompetitive in the piston market. Therefore, HRP will no longer use CP Pistons as our OEM piston manufacturer for our Derringer engines. HRP will also convert all street and custom piston needs to Diamond. This move will allow Hawaya Racing to increase inventory, offer quality pistons at a reduced cost and provide our customers with custom orders in a timelier manner. Johnny Vickers President"