o2 rmk sled w/ a new bottom in 04 {so it has perc reverse}.the engine tech top was also installed at that time. fab craft trailing arms,162 track with no lugs missing.anti stap roller on suspension.scratchers 4 window with coolent and exhaust temps.altitude compensators.sled is very strong runner.you will be very happy with sled. $5000.00 will be posting pics soon