Thanks, had a look at Metra and a couple more I found and Crutchfield's seems the best. I was already ordering the harness from there anyway so that plus a Bluetooth to RCA adapter bumped me up to free shipping. I'm putting in a Nakamichi CD-45Z so Aux 1 = headphone jack and Aux 2 will be Bluetooth.
While everything is apart I'm also adding JDM/EUDM automatic climate control because, why not? Some CDT ES-06 speakers I already have are going in as rears and I'll play around with soundproofing sometime later this fall when it's not so hot out.