This special Mercedes is Less a factory or factory's hop up than a GNX??? READ THIS Taken from this site: The 500E/E500 was a limited production sports sedan created in a collaboration between Mercedes-Benz and Porsche. In the grand line of sports sedans from Mercedes dating back to the 300SEL 6.3 of the 60's and 450SEL 6.9 of the 70's came the next generation. Production ran from 1992 to 1994 model years and yielded only 1505 total cars imported to the U.S. The line was renamed E500 in 94 in addition to some minor bodywork changes. Special suspension, interior, and bodywork caused the price to skyrocket to approximately 80K during its run. With 322HP and 354 lb-ft of torque on tap combined with 2.82 gearing caused 60 to come in less than 6 seconds and the car was electronically limited to 155. The W124 chassis was fortified with Porsche's help to ensure this car performed flawlessly in all aspects. Adaptive rear shocks and subtly flared fenders conceal 225/55/16 Z-rated rubber on 16x8.0" eight-hole wheels. Virtually every possible option available on a W124 is standard. Four bolstered sport seats replace the conventional 2 front/3 rear configuration of other E-class cars. Curb weight topped 3800 lbs so fuel economy suffered slightly. A larger fuel tank of 23.8 gallons made up for any possible loss of range. This is perhaps the most desirable and collectable Mercedes of the last 20 years" This special Mercedes is Less a factory or factory's hop up than a GNX??? ALSO I did find this showing that the 500e was slower than either a GN or a GNX. http://www.supercars.net/garages/PeP/12v2.html