Need help perfecting the budget build hemi swap

I don't even know that this is an actual instrument cluster for a Plymouth Duster, but if it is, and I intend to replace the ammeter, and temp gauge with a aftermarket set of Sun gauges. Is the wiring soldered to the circuitboard ?, and does the blue shell get chopped into to fit the gauge ? Is this hard to do ? What about the blank spot next to the headlight switch ?