I want to add that the spindles are upside down above. This GTV does have Dunlop calipers. I didn't add in that I don't have the '65-'68 parts book, but below is the spindle for the '69 GTV & Spider - along with the two spindles turned around. The caliper mount is cast in on the '69, just as it is in the (now) left one.
It doesn't matter which way you turn them; it's still a Dunlop spindle with the pressed on caliper bracket. It's not cast as one unit. The 69-94 style that you see it the book has two little cast ears that hold the caliper, not a straight sided piece. What's the point of your question, anyway?