Corvette Forums - Corvette Enthusiast Site - Found this in the junkyard

Here's the "G"4.

http://www.greenwoodcorvettes.net/images/g4_blue.gif SERIES 1984 - 1996

http://www.greenwoodcorvettes.net/im.../G4R7intro.jpg

With the development of the G4R body conversion Greenwood has taken styling, aerodynamics and quality to a new level. This state-of-the-art package is more impressive in person than pictures can convey. The Greenwoods consider the G4 series to be the most effective and street practical conversion they have introduced.

The exciting appearance of the Greenwood G4R package comes largely as a result of a seriously functional design. Aerodynamics are designed to be felt at reasonable speeds. You don't have to drive at the redline to feel the change in your car's stabilty. Competition tested, the overwhelming effectiveness was proven on Sean Roe's Greenwood-bodied Corvette which proved capable of dominating races and setting records in the Bridgestone Supercar Series. Adapted for the street and now available for your Corvette, the G4R package offers many features coveted by the discerning enthusiast.

http://www.greenwoodcorvettes.net/images/gc4roe500.jpg

IMPROVED PERFORMANCE

The improved stability, and grip are remarkable and felt at reasonable speeds. Optional Windshield Fairings and Mirrors reduce turbulence and noticeably quiet the interior.
BETTER COOLING
Unlike the competition, the Greenwood package actually improves the cooling. The Front Wing virtually force feeds air to the radiator and Hood Louvers and side louvers increase the venting of heat from the engine compartment and improve the function of the radiator.
PROTECTION FOR YOUR INVESTMENT
Hard rubber skids on the bottoms of the Front Spoiler and Rear Quarters prevent painted surfaces from scraping the pavement.
This all serial numbered package represents a culmination of years of research and development. We've placed tremendous attention to detail as we considered each and every facet of the driveability of your car. Be among the few to own one of these true collector cars.
Find out more details about each body part by clicking on the pictures at the top.[/align]

The "G"5,...
http://www.greenwoodcorvettes.net/images/g5_red.gif SERIES 1997 - 2004

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Greenwood has always been the leader in high performance aerodynamics and we are proud to offer the finest and most effective designs for your C5 Corvette.
All of our parts are made with vinylester resins, e-glass and kevlar cloths, and aircraft grade aluminum for our optional brackets. The G5R and RS Wings are mounted directly to your C5's frame for the most effective transference of downforce. Our Front Splitter has the flexibility to move upward on impact, and not deflect downward at high speeds. The Side Rockers are designed to produce downforce and feed the functional rear brake ducts. Our Rear Tunnel and Quarters reduce drag and vector exhaust gases away from the rear of your C5. The Windshield Fairing helps smooth the airflow over and around the C5's windshield, helping to reduce buffeting and wind noise.
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With a complete Greenwood G5 Series aerodynamic package installed you will notice a significant improvement in handling at as little as 50mph. With performance foremost in mind, all of our aero pieces are designed to perform by reducing drag, managing airflow and creating downforce. The superior materials and processes we use ensure that your Greenwood G5 Series aero pieces will maintain their shape and quality for years to come. We guarantee all parts to be free from defects for the life of your Corvette.[/align]
and the "G"6...

http://www.greenwoodcorvettes.net/images/g6_yellow.gif SERIES 2005 - 2010

http://www.greenwoodcorvettes.net/im...v%20front1.jpg
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Greenwood has always been the leader in high performance aerodynamics and we are proud to offer the finest and most effective designs for your C6 Corvette.
With a complete Greenwood G6 Series aerodynamic package installed you will notice a significant improvement in handling at as little as 50mph. With performance foremost in mind, all of our aero pieces are designed to perform by reducing drag, managing airflow and creating downforce. The superior materials and processes we use ensure that your Greenwood G6 Series aero pieces will maintain their shape and quality for years to come. We guarantee all parts to be free from defects for the life of your car.
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http://www.greenwoodcorvettes.net/im...nv%20rear1.jpg