You can remove the pedals from their respective pedal arms, and then the arms can be disconnected and removed from the cross shaft. On my 3a it looks like the tailpipe will have to be loosened and moved so the cross shaft can be pushed towards the transmission and then removed. There is also a brace that supports the end of the cross shaft, it is fastened using the bolts that hold the master cylinder in place.
Take a picture before you take it apart so you can get the various spacers and pins back in the right order as these will center the pedal arms on the opening in the toe board and allow the pedals to be installed without rubbing the sheet metal.