I did ask the guy @ the parts department and he said that the '04 cluster is compatible w/ '03, '02. He also said that the odmeter is very easy to change for a tunner shop that has the hardware requiered for the job (a few minutes at most), so you would not need to wait to long. He also did not think it would affect the warrenty at least as far as Wilton Subaru was concerned. Just make sure you call and ask your local dealer who they would suggest to do the job, that way your dealing with someone that they believe are reputable. Then there will be no warrenty issuses.