I have a 2006 RC with 45,000 miles on it. It was all stock except a borla exhaust and volant intake when I purchased it. I installed a Billy Boat exhaust system with high flow cat mids, JTVSP pulley, JTVSP throttle body, SCT tune from Torrie and a JMB intake. I am at sea level in NH. The dyno is a land and sea dyno which reads similar to a mustang. I made 469hp/534tq at the wheels. I am very happy with these numbers.