64 Instrument cluster removal?

[tomfg]

Have to remove my instrument cluster on my 64 1/2 ton. It's the style with the angled knobs, ie., lights, choke, etc. Do I need to remove the switches before the cluster will come out, or can I just unplug the wires from the switches and pull the cluster and switches all out at the same time? If I need to pull the switches first, how? Don't see where the knobs come off the shafts. Are these the type of switches that you have to release the knob shaft via a little hole and piece of wire? ... been a long time.
And, does anyone sell speedometers for my truck? My odometer isn't working. Thanks.