The whole gauge cluster just slides out of the dash. It is a friction fit. MB sells a tool for it or you can make your own. i will see if I have a picture of them. It is basically 2 hooks with a handle on it. You will have two bulbs at the top rear of the cluster that light your gauges.
1969 RS/SS Camaro Conv. L-89 Alum. Head 396 375HP 4-spd
1987 GNX #419, 2002 RX300
FS: 1934 Ford Street Rod, Blown 383 $48,500 Firm