Good to hear you recall more room in our wheels though.
Dont know if there is or not now. It sure looks it because its more wide open than the 9 spoke. But i just went to my car and took some measurments. From the inside of the spoke to the face of the caliper there is 5/16" of room left and then from the inside of the rim face to the top of the caliper there is about 3/8" left there. i wouldnt want to take up all of that room though since itd be harder to get the wheel on and if anything happens, ie bent wheel some how, i dont know how youll drive the car away. I think the main thing is in the rear of the caliper where it slants down. The corvette brakes have the ribs running over the whole top. If you use too thick of a pad, it may pull the caliper more toward the spokes and then run into the wheel on the inside where the ribs are running down the slanted portion. I just looked at a close up of the z06 calipers and the ribs dont seem to come off the top that far to interfere with the wheel itself where you can visually see. But if Wild got them on with his 9 spokes originally, using the f-body pads and not vette pads without any modifications to the caliper, i dont see why they wont fit the 6 spokes.