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This classic Jaguar XJ has a 720-hp ungentlemanly secret

Forget Tawny Kitaen. If you want to make a Jaguar XJ rock, just do what this guy did: stuff a heavily modified and turbocharged General Motors V8 under the hood, and take it to the track.
The video calls this Series 1 XJ a sleeper, but with its open exhaust and obvious turbo whistle, the once-gentlemanly sedan is anything but. The owner says that the engine is GM LQ9 V8 that has been stroked to 402 cubic inches putting out around 720 horsepower with 12 pounds of boost (in standard form, this 6.0-liter V8 was used in the second-gen Cadillac Escalade). Check out the video below to see what that kind of power does for this classic Jaguar in the eighth-mile.

Jaguar F-Type Coupe spotted testing

The automotive world has been hot on fire with the Jaguar F-Type of late. We're still recovering from the excitement of driving Jaguar's new sports car for the first time, and recently we had a predictive look at a coupe version. As it turns out, those 'patent sketches' were just a warm up for the real deal F-Type Coupe, as this brand new set of spy images proves out.
Word from our shooter is that security around the F coupe was and is really tight. The photographer had to hide in the cargo area of his clandestine SUV, just to catch these few, not-perfectly-clear images (that odd color your see is window tint). Still, the photos are good enough to see that the rakish silhouette of the hardtop is going to do justice to the convertible. In fact, the new top seems to flow quite perfectly into the car's rear haunches.
Expect that the F-Type Coupe will share an engine lineup with the roadster, meaning both a naturally aspirated and a supercharged V6, as well as a V8 option. Hot R and R-S versions of the Jaguar coupe are a virtual lock, too, though how far down the product pipeline they are is unclear.

Hardcore Jaguar F-Type underway, 600 horsepower possible

Thanks to an already potent range of supercharged engines with some of the best exhaust notes available, the Jaguar F-Type is without a doubt a sublime performer. Still, there's always room to grow, and we are getting another good look from the Nurburgring at what's suspected to be an even more powerful version on the way. Spy shots of what was believed to be the Jaguar F-Type R-S first came out last spring. This time the roadster is practically uncamouflaged, though. The similarities are definitely there, and both test cars wear the same wheel design and quad-tailpipe rear diffuser. The latest one lacks the massive front splitter jutting out but gets a quite large, fixed trunk lid spoiler at the rear. You can also spot some large-diameter ceramic brake discs behind the wheels. The things happening under the bonnet might be even more interesting, though. To befit all of the exterior performance upgrades, Jaguar's supercharged 5.0-liter V8 is expected to nestle between the front wheels, and the mill is likely getting a boost in power to take output to 580 or even 600 horsepower, versus 550hp in standard form. Hopefully, the extra grunt makes the exhaust note even more intoxicating, as well. Featured Gallery Jaguar F-Type R-S Spy Shots Image Credit: CarPix Design/Style Spy Photos Jaguar Convertible Performance jaguar f-type r jaguar f-type r-s