The XKR Portfolio offers a few noteworthy upgrades over the standard car. Inside, available spun aluminum or American Walnut trim is available. The sound system features upgraded speakers from Bowers & Wilkins, and is the first production application of the relationship that began with the C-XF concept car. The supercharged 4.2-liter V8 engine is unaltered, but the brakes are larger by 45 mm, and are the largest brakes ever fitted to a production Jaguar. The exterior is any color you want, as long as it’s Celestial Black, and 20-inch polished five-spoke Cremona wheels are standard equipment, along with all the other exterior styling cues of the XKR that make us drool.