What about the Camaro bolt-in Watts Link from Fay's-2 Suspension? Oh wait, I see it was already mentioned.
Jim Fay is a good guy and a racer. I would give him a call and pick his brain some on this..
Seems like what you're looking for.
www.fays2.net
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"A ship in port is safe, but that's not what ships are built for."
See Bad Penny run the cones:
https://www.youtube.com/watch?v=8GUPPIX-92U
1971 Chevelle Wagon - Roadster Shop Chassis ProCharged Shafiroff LS and lots of yada yada
1968 Camaro - Project Track Rat - 440 RHS LS