Complementing the 987C Boxster S with the 987A Cayman S Front and Rear Bumper Covers

Why change the Boxster S Bumpers? You fall in love with a Porsche—and start improving, modifying, and changing it until it reflects who you are. It doesn’t matter what kind of perfection you’re chasing. Porsche geekdom is one religion with many denominations: club racing, driver’s education, autocrossing, rallying, touring, preservations, concours, and socialization. If you don’t change it and make it uniquely yours, then you’re not really a Porsche guy, just a temporary owner.
Why the Boxster S, instead of the Carrera S? Porsche introduced the Boxster in 1997. They traditionally improve and refine their automobiles. Accordingly, three years later they brought out the Boxster S with a 3.2L engine. The Boxster S had a 6-speed transmission, third radiator, racing derived monoblock 4-piston calipers with larger cross-drilled rotors, 25% stiffer springs with matching shocks and anti-roll bars, and available 18” wheels with 225mm and 265mm width tires. These improvements changed the Boxster from one of the world’s nicest sports cars into an awesome and thrilling machine! Legendary Porsche race car winner Hurley Haywood said, “The Boxster is more pure as a sports car than the 911 because it is a lighter, two-seat, mid-engined roadster.”
Optimum balance and performance is attained with a rear-mid engine layout (engine between the two axles; forward of the rear axle) driving the rear wheels. While all-wheel drive is better than rear wheel drive, it is not allowed in professional racing series. Open top roadsters are lighter with better visibility than coupes; but must be engineered to compensate for their lack of roof support.
The 2007 Boxster S at 2,965lbs is 146lbs lighter than the 911 Carrera S Coupe at 3,131lbs, 420lbs lighter than the 997S Cabrio at 3,385lbs, but also has a smaller (3.4L versus 3.8L) and less powerful (295bhp versus 355bhp) engine. Performance results from a car’s power-to-weight ratio; a 2.5% reduction of the Boxster S weight (75 lbs) and an 11% increase in its power (33bhp) equal the 911’s performance ratio. Even with the same power ratios, a lighter vehicle has an advantage in cornering, braking, and overall balance. More than 120 pounds can be reduced from the Boxster equipped with Porsche Ceramic Composite Brakes, switching to Porsche GT3 Clubsport seats, and installing lighter wheels. Headers, racing catalysts, sport mufflers, plus a cold air intake and remapped DME add nearly 60bhp—for a power ratio surpassing the Porsche 997S by over 8%.

source pdf: http://hod.pca.org/Articles/Cambron%20Cayman%20Bumper%20Installation.pdf