Yeah you can make them out of the Autarch blister, oddly for a blister it can be assembled in a few different ways, however most commonly the blister is is set up with the wings variant simply because a lot of the time its the most useful. I think a few bits may have been taken from other sets, but the majority body and head ect are the blisters.
I don't have the codex with me, but if it's not one of the two on the GW site, then it's the special edition one, as I know there is a special edition Autarch. Some times it shows up on e-bay, but pretty expensive.
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