hi vulcan doc... question for you: im trying to determine if 2007 oem pipes from a 900 classic will fit a 2009 classic. From the Kawasaki website diagram, the pipes for both are 18087A/C and 18087/B, but from the kawasaki sites part list, the last four digits differ. Fore example: 2009 is 18087-0143 FR, -0144 RR; but the 2007 is 18087 -0116RF and -0123 RR. all other parts, gaskets, flanges, nuts/bolts, etc. are identical between the bikes. Think the 2007 pipes will work on the 2009?