Jeff,
I really like the Edelbrock IAS shocks. They're pricey, but the handling, ride and braking stability are excellent. Plus, for a mostly stock suspension vehicle, they work very well at the track as well. For "serious" race cars with modified suspensions I'm sure drag shocks offer some advantages, but drag shocks are a Really Bad Idea for driving on the street.
Anyway, check them out at:
Edelbrock's Web Site
The normal Performer IAS shocks are red, which wouldn't suit my taste for a GN, but the Classic IAS has the same technology and a more subdued gunmetal gray powder coating.