When you see the word “Portfolio” in a Jaguar’s name, expect three things. First, there won’t be very many of them. Second, there will be luxurious surroundings, such as leather-covered dash, sumptuous seating, high-end audio systems and maybe even a few extra performance goodies. The XKR Portfolio sports the same engine and transmission as other XKRs: A 4.2-liter supercharged V-8 coupled to a six-speed automatic transmission with manual shift control. The combination is good for 420 horsepower, and makes the XKR seriously quick.