Rick,
Please tell me that the cars will be let out on the airstrip for some top speed runs.....
The V8 Supercars are still using the 8.2" blocks, so while they use Cleveland style cylinder heads, they're still Windsors.
We have a couple of different companies making top quality single plane manifolds for 4V Clevelands, but they have a pretty high plenum height. I bet they wouldn't fit under a standard scoop... Blue Thunder aren't made out here, but I'll get some prices from a friend at the track tomorrow. His own Cleveland is making around 900 naturally aspirated horsepower, so he knows what works on Clevos and what doesn't.
How radical is your motor? I have a feeling that these intakes are really best suited for high compression, hgh rpm race motors.