Rafe, those don't look quite right.
The AMC "turbine" wheels have a lot of narrow slots in them. The "turbo cast and turbo cast 2" wheels are more what these look like. However the AMC Turbo Cast wheels are 12 spoke, not 10. They were also 14".
These look like American Racing "Vector" wheels that are 15x10. They only have 10 spokes so they are a close looking wheel, but not exactly. You can find them all over the place.