First order of business is to remove the negative battery cable from the battery. Lots of exposed electrical connections behind the dash.
The 4 nuts are a challenge to get to for removal. It can be done while sitting in the drivers seat, but you will be flying blind.
Once you remove the nuts, you push the gauge inwards and turn the cluster sideways to access the compression fitting nut at the oil gauge, and the nuts for the gas gauge wires, and the ammeter wires. Be careful while fishing the temperature tube/bulb through the firewall hole. You don't want to damage it. They are pricey.
