A body dash frames

You could modify the harness, depending on the cluster connectors. My old 67 eg used the inline connectors, most the newer stuff I think uses the keyed circular connectors. My connector pins were so bad I soldered pigtails to the PC board traces and used Molex connectors instead.

I'm not speaking of specific cluster type, only generally

My low dollar backyard fix:

67clusterrepair-jpg.jpg