Cam plate and oil pump upgrade kit for Twin Cam engines. It is not campatible with stock spring-loaded chain tensioners, This kit is designed for use of hydraulic cam chain tensioners like 2007-2017 TC and 2006 Dyna or S&S Hydraulic Tensioner Kit 330-0158 if chain driven cams are used. If gear driven cams are used the oil ports to the tensioners has to be blocked with parts included in the kit.