A rare Ferrari 550 Barchetta with a Koenig six-pipe exhaust listed for sale. The 550 Barchetta arrived in 2000 to mark Pininfarina’s 70th anniversary, with production limited to 448 units. The car looks to be in showroom condition, which for a two-decade-old open-top Ferrari is no small thing. Rather than the standard quad layout, the aftermarket upgrade features six tailpipes promising to deliver a deeper and raspier V12 sound. The roofless 550 Barchetta was replaced by the 575 Superamerica in 2005, featuring an electrochromic glass roof and a limited production of 559 units.