We’ve already seen it in concept form but here finally is the 2013 Infiniti IPL G Convertible that will go on sale next year just in time for summer. The new model, making its debut this week at the 2011 Los Angeles Auto Show, is based around the striking G37 Convertible but gets a few styling and performance upgrades.

IPL, short for Infiniti Performance Line, is Infiniti’s new performance branding, similar to Audi’s S range but not an independently run tuner like BMW M, Mercedes-Benz AMG or Audi quattro.

Key features of the new IPL G Convertible include special aerodynamic styling pieces, a tuned 3.7-liter V-6 engine, exhaust and suspension upgrades, unique 19-inch aluminum-alloy wheels, and full leather trim.

As a result of both the exhaust system and engine tuning, which included some recalibration of the air-fuel mixture and ignition timing, the IPL G Convertible generates 343 horsepower and 273 pound-feet of torque--an increase of 18 horsepower and 6 pound-feet over non-IPL models. The engine is matched to an electronically controlled seven-speed automatic transmission with a downshift rev-matching feature and magnesium paddle shifters when used in pseudo manual mode.

Uprated brakes also feature, which include four-piston calipers and 14-inch discs up front and two-piston calipers and 13.8-inch discs in the rear.

For the suspension, front spring rates have been increased 14 percent over the G Convertible Sport model and rear spring rates increased 4 percent. Front stabilizer spring rates have been increased 6 percent over the G Convertible Sport model and rear stabilizer spring rates increased 125 percent. Shock tuning has also been adjusted and incorporates an all-new HF-type shock.

Standard luxury appointments include full leather trim with embroidered IPL logos, aluminum pedals, a 13-speaker Bose stereo, dual-zone climate control, Bluetooth connectivity and navigation with real-time traffic and weather information.

This is in fact the second IPL model, the first one being last year’s IPL G Coupe, which you can read about by clicking here.

And for our complete coverage of the 2011 Los Angeles Auto Show, click here.