Porsche has announced a retrofittable sports kit for the 911 Carrera S, Carrera 4s and Target 4s. At less than $1300US, the Sports Chrono Kit will boost your output level with the $121,750 more expensive, 450HP GTS.
Larger turbochargers boost the power, a unique exhaust system that ends in a dual center exhaust expells the emissions and a revised brake cooling system brings it all back to a rest. Again, this is all included standard on the GTS but for way more money.
The manual version of the package adds $12,350 to the sticker price with the PDK-equipped automatic being some other cost that no one cares about.
Release date has not yet been announced.