I've never pulled pedals out of a lifestyle era truck. In my 63, there was a bolt that ran through every pedal, undo that bolt and watch out for the overcenter spring on the clutch pedal. Not sure it's the same though for the newer trucks. I'd imagine there is still a large through bolt, undo that and pedals should drop. On the 63, I put a spacer in where the clutch pedal was, and kept the original brake pedal.

Hopefully someone chimes in that knows for sure.