I have to note that Hayek wasn't an Austrian in the methodological (i.e. epistemological) sense. If you read his Use of Knowledge in Society closely, you'll see that Hayek is fine with the neoclassical project, he's just telling them to be careful with their models.

Thanks for clarifying this. I've heard so many good things about Hayek that I'm meaning to dive into his oeuvre at some point. But I'd also gathered that some Austrians were a-priorists, as the OP says, so I'm not interested in spending more time looking at their thinking. The OP had me worried that these ends conflict, but you've reassured me that they don't.