2013 5.0 premium with 6sp auto,brembo brake pkg, 255/40/19. 3.15 rear gears. Flowmaster series 40 Axleback 13,000 miles. Took her out to the local track @ about 10,000 miles. Ran 13.4 @107. change the exhaust to the flowmasters, next time ran 13.01 @109.
I am not planning on any more upgrades...