That caliper bracket mounting bolt, man I know that pain!
I tried Mole grips and pliers/heat on mine. It was evident they were never going to move.
Annoyingly, the Aero rear discs can come off with the calipers in situ. For the folks who claim spanners will take off the bolts, I'd have paid for them to have tried mine, and not round them off. Even with a long breaker bar, the bolts didn't half let off a crack, and send shockwaves down the breaker bar. No way would they have undone with a small spanner. For a consumable, it's up there with one of the most stupid designs I've seen. I think Alfa top them with a couple of their cars, but that's saying something.
The next hurdle were the dampers, which I'll feedback on with the next update.