Nissan’s luxury arm is doubling its Infiniti Performance Line [IPL for short] lineup with the addition of the new 2013 IPL G Convertible that we first saw in concept form at last year’s Paris Motor Show.

IPL is Infiniti’s answer to the in-house tuning divisions of its German competitors such as Audi’s S brand, BMW‘s M department and Mercedes-Benz’s AMG branch.

Scheduled to reach the market in spring of 2012, the convertible model follows the IPL G Coupe that went on sale in the States in December of 2010.

Infiniti has not yet announced final details, but the Japanese company said the production model will sport the same “level of equipment and performance modifications” as the concept car.

This means that like its coupe counterpart, the IPL G Convertible will feature a more powerful version of Infiniti’s 3.7-liter V6, most likely delivering the same output at 348 horsepower, an increase of 18 horsepower over the engine.

The concept also sported a bespoke aero kit along with a custom exhaust and suspension, 19-inch alloy wheels and unique red leather-appointed interior set against a Malbec Black exterior.

“The IPL G Convertible will deliver the goods, just like the current IPL G Coupe does. Plus, the new IPL G Convertible offers the added pleasure of open-air motoring,” said Infiniti Americas Vice President Ben Poore at the Pebble Beach Concours d’Elegance where the IPL G Convertible Concept was on display this past weekend.

“Like every Infiniti, the new IPL G Convertible will take a different path from its established competitors,” added Poore. “It’s a terrific addition to the Infiniti Performance Line, taking the dramatic Infiniti G Convertible to an even higher level.”

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