Jaguar NA press release:

The Ultimate XKR?

CHICAGO, Illinois, February 5, 2004 - The most powerful road-going
Jaguar convertible ever - the 550 horsepower XK-RS concept car -
was unleashed at the 2004 Chicago Auto Show today.

Developed by Michigan-based Rocketsports Racing in cooperation with
Jaguar North America, the XK-RS concept demonstrates how Jaguar's
luxury GT road car can be transformed into a thundering 200-mph

"At Rocketsports, we're very familiar with Jaguar's XKR sports car,
having won the Trans-Am Manufacturers' Championship two times with
this beautiful, fast car," said Rocketsports Racing owner, Paul

"We think the XKR makes a great foundation for high-performance
tuning. The XK-RS concept is just one dramatic interpretation of
the many directions in which the car can be taken," he added.

Engineers at Rocketsports' Lansing, Michigan workshop took the
already-potent Jaguar AJ-V8 Trans-Am race engine and increased its
displacement by stroking it out from 4.5 liters to 5.0 liters.

To ensure drivability, the engineers reinstalled an Eaton
supercharger to deliver an estimated 550 bhp and 500 lb. ft. of
torque, giving the car the power to accelerate from standstill to
60 mph in under four seconds, and take it to a top speed of 200

"Many of the lessons we learned in developing the 650 bhp normally
aspirated Jaguar AJ-V8 race engine for the R-Performance XKR
Trans-Am race car were incorporated in the engine for the XK-RS,"
explained Gentilozzi.

To make the car more involving for the sports car enthusiast, the
standard six-speed ZF automatic transmission was replaced with a
five-speed manual transaxle. Re-positioning the driveline weight to
the rear of the car also results in a perfect 50:50 weight balance
for improved handling.

Rocketsports also used the team's considerable expertise in
high-speed aerodynamics with its Jaguar XKR Trans-Am race cars,
modifying the production XKR's body to ensure ground-hugging
stability at very high speeds.

Special underbody air tunnels running the length of the car were
created, along with deeper front and rear spoilers, wider wheel
arches and aero-style sill sections similar to those featured on
the specially-developed XKR that starred in last year's James Bond
adventure, 'Die Another Day'.

When tested in the wind tunnel, the changes are expected to result
in a 100 percent increase in aerodynamic downforce at top speed
compared to the standard car.

The production XKR's suspension was also modified to ensure
supercar handling. The changes include the addition of coil-over
high-performance Penske shocks. To give the concept the kind of
stopping power that matches its anticipated grip, R-Performance
Brembo calipers with drilled rotors (13-inch front/12-inch rear)
were added.

And no 200 mph supercar would be complete without a dramatic wheel
and tire combination. The XK-RS comes fitted with three-piece
wheels - center-lock 'Machiavelli Gotti' - 20-inch x 10-inch at the
front, 20-inch x 11-inch at the rear - shod with high-performance
Michelin Pilot tires.

Inside, the XK-RS features body-hugging Johnson Controls 'Leap'
seats clad in black leather with medium grey inserts.

To complete the bold appearance, the concept is painted in rich
black lacquer. Along each side, Pearl Black Jaguar 'leaper'
graphics echo those used on Rocketsports Racing's XKR race cars.

"The XK-RS concept is one more example of our strong relationship
with Paul Gentilozzi and Rocketsports Racing," said George Ayres,
vice president of Marketing for Jaguar North America. "The XK-RS
uses Rocketsports' considerable race car expertise to create this
dramatic, one-off concept car."

The XK-RS is Rocketsports' second Jaguar project car. In 2002,
Rocketsports created the purposeful 'Racing Concept' version of
Jaguar's all-wheel drive X-TYPE. The dramatic-looking concept race
car was developed to test the potential of Jaguar's X-TYPE as a
project car for the enthusiast market.

The XK-RS concept will be on display at the Chicago Auto Show
February 5 - 15, 2004

XK-RS Concept - Specification

Based on 2004 Jaguar XKR Convertible

Built by Rocketsports Racing, Lansing, Michigan

Supercharged Jaguar AJ-V8 Trans-Am race engine, stroked out from
4.5 to 5.0 liters. Custom Rocketsports valve train, Borla stainless
steel headers, Bosch fuel injection, re-engineered rotating
assembly, dry sump oiling.

550 bhp

500 lb. ft.

Coil-over Penske shocks

Manual sequential 5-speed transaxle

0-60 mph in 3.9 seconds. Top speed 200 mph.

Additions include new front and rear spoilers, underbody air
tunnels, sill extensions. Track widened by 2.8 inches total, rear
3.0 inches total. Gross weight 3,400 pounds. Overall height reduced
by 2.75 inches at windshield.

Three-piece, center-lock Machiavelli Gotti; 20-inch x 10-inch (fr),
20-inch x 11- inch(r)

Michelin Pilot; 285 x 20 (fr), 325 x 20 (r)

R-Performance Brembo calipers with drilled rotors (13" front/12"