Removing the radio is pretty straightforward. In addition to the items Fid mentioned, you'll need to remove the tuning and volume knobs. There are two bolts that hold the radio in place under the dash, located on both sides of the unit, remove them. The radio should then slide away from you towards the firewall to clear the bezel, then drop down. There's not much room, but it'll fit.
It's much easier to do if you first remove the entire ash tray assembly and well as the heater distribution panel - the piece that sits on the transmission hump. It's held in place with some sheet metal screws.