I’d imagine they’d break free. My Ram 1500’s looked like that and with a breaker bar I was able to get them off.

Another thing you could do if they are super rust locked is hit it with pb blaster a couple times and let it really soak in, then use an battery/ air impact on it. The threads are likely perfectly fine it’s just the head that’s locked.

I believe yours are torqued to 139 ft/lbs so they are on there tight.