Model 2704 MAX MicroTuner 2004.5-2005 GM Trucks with 6.6L Duramax Diesel Eng (LLY Engine) Unit, cable, instructions for programming and code reading incl $175 to your door PM or e-mail through site Click here for more info: http://www.autoanything.com/performance-chips/60A1718A0A0A2360063.aspx *This link says it fits LB7 engine, also. I dunno ?? SOLD