The top picture is the SVT spindle only. Those top 2 holes on the spindle are for the caliper mounting bracket to bolt to. In your picture of the calipers that gold piece is the caliper mounting bracket that was discontinued and confirmed with Steve at Tousley. It is the piece that bolts to the top of the spindle and that the rest of the caliper mounts to. I have a complete set sitting in front of me at the moment.
Hatch Nation #9
"2 by 2 Hands of Blue."