Aerosmith frontman, Steven Tyler, has taken delivery of the very first Venom GT Spyder by Hennessey Performance.

According to Hennessey Performance founder, John Hennessey, "Steven came to us and asked if we could build his Venom GT as a roadster." Hennessey continues, "We had to make a few structural changes to our integrated rollcage in order to be able to fit the removable top."

As a result, the curb weight of 2,743lbs (1,244kg) increased by 30lbs. In order to compensate, Hennessey says, "We decided to increase the Venom GT's power to 1,244bhp to maintain our one horsepower-per-one-kilogramme power to weight."

This compares to the coupe which produces 1,200 hp (895 kW / 1217 PS) and 1,155 lb-ft (1,564 Nm) from its mid-mounted, twin-turbo 6.2-liter V8 engine and six-speed manual transmission. It goes from 0-60 mph in 2.5 seconds, but that is almost irrelvant as the key performance spec is its 0-200 mph time which is 15.3 seconds.

Hennessey has already announced plans to build five Venom GTs for the 2013 model year and the coupe is priced from $950,000 (€745,098 / £601,722) while the Spyder goes for $1.1 million (€862,745 / £696,731).

Gallery: First Hennessey Venom GT Spyder goes to rocker Steven Tyler

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