Well damn. I got everything in a bundle, along with a lot of other mustang stuff, from a guy who claimed they were cobra parts and took him at his word. I should probably know better, but I don't actually have the basic Cobra calipers on either of my 13" rotor cars (Brembo & Baer). So, I apologize for my unwitting misrepresentation, and won't just pass it on to you.
So, let's work something out. I'll, of course, refund your money for a full return as promised when you called with concerns, but it looks like a compromise on the spindles, which you still want, and a partial refund on the rest makes more sense for you. Let's carry on the rest via text/phone. I'm sorry for the additional trouble caused, but will make it right.
Chris