Depending on the year and condition and milage.
(On some it won't help or hurt it!).
It's considered a custom at this point and I must agree that its really worth what you are willing to pay.
(There are some exceptions,like the Greenwood turbo,ect,.)
It sounds like you did well on the trade! :thumbsup:The main thing is that you are happy with it! It's not a bad price for a fun toy these days.:cheers:
Example-
http://greenwoodcorvettes.com/TurboGT.html $42,500 or best offer
(From Vette Magazine)
The History Of The Greenwood Turbo GT
John and Burt Greenwood built quite a few race-based street cars in the '70s. Although they had developed their own unique Corvette suspension and aerodynamic systems to support their racing program, these technologies eventually found their way into production autos as part of an effort to offset their high tooling costs. Initially, the street cars were offered with minor aerodynamic improvements and exaggerated styling cues, but they quickly evolved into nothing short of high-speed endurance racers for the road.
Between 1975 and 1981, approximately 43 custom-made street cars based on five distinct body styles were produced under the umbrella of Greenwood International. These included the GT/Sebring GT (32 produced), the Sportwagon (1), the Turbo GT (3), the Daytona (5) and the GTO (2).