[right way right]

The threads are in the metal bracket right under the bolt head. Stick a bar in between the brake pads and the rotor to collapse the piston. Then you can probably work the PB in between the slider boot and mounting bracket.
It sounds like your tools don't fit properly and you don't have a strong enough impact or long enough breaker bar.If you heat, heat the steel bracket under the bolt head not the caliper. Use and oxycelene torch to heat don't cut. Make it glow red on the out edge. Gdt off the intenet and get her done.

[Paul R.]

Well, I’ve been “attempting” on this for 3 days now, so it seemed like time to get ON the web (sporadically, I’ll admit) and get some advice.

It looks like the PB can get “in” on either side of the bracket. But, the shallow hex head on the pin really does limit getting good torque on it.

If there are no threads at the end of the pin opposite the head, then SURELY I can beat this thing!

I’m 1st going to try grinding off the chamfer on the socket & going “two person” with me trying to keep the socket on the hex head, and all 95 lbs. of my wife on the breaker bar. (That way, if it slips and I get whacked, only I get whacked.) I also may try laying my hands on an air impact wrench — that plus turning the wheel might get “in there” with the impact wrench.

Then, maybe the heat as advised... well shoot, “gotta” find something else to work on for a bit, or maybe eat lunch. A line of T-showers just arrived, and this IS a “driveway” project!