Goal: I need a stock header and exhaust for my 2004 CRF450R. Question: I cannot recall if 2004 had its only stock exhaust fit. In other words, will any other year fit the 2004 CRF450R???? If memory serves me correctly - each year, except 2007 and 2008 had differing exhausts - due to where the midpipe connects to the subframe. I need your help!