Aim for a 2005... It has things that were "fixed" from the 2004 model year... You get revised wheel well liners, anti-rattle headlight brackets, trunk lock cylinder removal, you'll get door badges IF you get a Comp G. There are lots of other little subtle things that were done in the second year of production. 2006+ has a lot nice trim additions in the interior, so that is a plug as well.. Also has nicer leather as far as I am concerned! I know there were tuning issues with 2006 before, but I think that's been resolved now by Will @ Overkill.