COMP Cams Trunion Kit LS-Type Rocker RetrofitCOMP Cams GM LS Series Retro Fit Trunion Kit converts a stock LS series rocker arm into a roller trunion rocker arm. This increases the stability and stiffness of the rocker arm. It allows the stock type rocker arms to be used in race applications sufficiently. This Part Fits: Year Make Model Submodel 2001 2004 Avanti II Base 2008 2009 Buick LaCrosse Super 2004 2007 Buick Rainier CXL 2004 2005 Buick Rainier CXL Plus 2009 2015 Cadillac CTS V 2002