Hey Josh. I just came across your thread right now. I'm enjoying the pics, and of course, your thoroughness in cleaning up the car "a bit." Nice looking wagon, too!
I'm sorry you're frustrated in working on the car with all the corrosion. I lived in NY for years, and yes, the salt "melds" metal together. That's why many mechanics there put anti-seize compound on the wheel threads (as Steve indicated) and other places; otherwise, some have gone through a lot more expense, time, and frustration in replacing melded parts in just trying to get the wheels (and other parts) off (as you have found out).
Some years ago, a friend mechanic of mine here in AZ had to drill, torch, and hammer parts off various parts off the brakes just to do a brake job (it was a car from CT). It took him about 6 hours. He knew I didn't have much funds so he worked around the melded parts in a way that he didn't have to order dealer-proprietary parts. After that, he advised me to sell it because he would never touch that car again. He said the next time the car needed a brake job, a shop doing it would charge me about $1,000 just for pads and maybe rotors cut. That's because the next shop doing it would simply cut, drill, and torch the parts in a way that would require new parts. Anyway, that's why mechanics in that area and other areas use anti-seize compound.
That same car kept on having rust come through it although it was now in the desert in AZ. I hadn't done anything to stop it like what you're doing for your car, because I thought the dryness wouldn't cause the rust to spread, but I was wrong. However, the car did have more rust than yours; so just keep an eye on the more severely rusted areas on your Legacy (and I know you will!).
After you get everything cleaned up and installed as you like, I hope you find pleasure in driving and maintaining the wagon!
