Brian - the ign sw has a threaded bezel on the face with 3 small notches in it that can usually be loosened by lightly tapping on a screwdriver in one of the notches - NOT a nut in back of the dash
yes, the brake and clutch both have bolted points just under the floor, neither real easy to get off, but just work at'em
do not torch the steering column!! the steering box unbolts from the frame and the whole assembly is removed downward, out of the cab from under the truck - easier if it's jacked up a bit
you'll have to remove the shifter "knuckle" at the top of the column, loosen the clamping joint halfway down to take off the top part, and remove the lower arms from the shifter box on the column under the hood - should be able to leave that lower box on
Bill