I just got back from the dreaded Illinois emissions test, and it PASSED, I bought the 2006 SRT-10 RC in 2008. used, I'm the second owner, It has some mods, Bassani headers,catless mids. o2 sensors,K&N CAI. caltracs,X-metal gen 10 shifter and Boomers stage 2 , not crazy about the shifter.