What did everyone use (that's done this) to cut out the brackets? A cutting wheel? Torch?! Plasma cutter? I don't want to go after it and cut out so much material I've got to refill with welding!

I have a 4 day weekend starting tomorrow morning and I'm thinking seriously about attacking this. Needs to be done soon as I've gone through 4 boots on the pass side in the past couple months.