The Dundon D4 GT4 Clubsport Package is the culmination of our work on perfecting and guiding the pressure waves into and out of the 3.8L Engine. The D4 Clubsport package is all business, no cats, no valves, light and simply powerful!For those looking to...

The Dundon D4 Package is the culmination of our work on perfecting and guiding the pressure waves into and out of the 3.4L Engine resulting in 40lbft max gains over stock and 62whp at 7000rpm. The Street Power Package is for street driven Boxsters...