These changes result to a total output of 456 horsepower and 498Nm (367 lb-ft), up from 343 horsepower and 365Nm. But there's a price for the upgrade -literally: the performance kit costs a hefty €13,000 while the sports muffler will cost you another €1,350.
Other available performance modifications include a new braking system with 6-piston calipers at the front (€3,852) and 4-piston calipers at the back (€3,103), KW-Sport coilover kit (€1,749) and stabilizers (€419) plus 20-inch alloy wheels from Oxigin wrapped in 255/30 Hankook tyres up front and 305/25 at the rear (€2,723).
We wouldn't suggest it from a style point of view, but Kneibler Autotechnik also offers an LSD scissor door conversion for €1,990.
If you do you the math, the total price of the package (without the doors) comes out to a more than hefty €26,196 or about $37,500 at today's exchange rates.