Hello, I made a big mistake I bought a new set of ACDelco Spark Plugs P/N: 506C GM# 12043764. I took a picture of the wires when they were connected a while back when I was painting the engine. In the new wire set 4 of the wires are the same length and the other two are almost the same length. Below is the only unique identifier on each plug

2 Wires say D.E.E.D 8
2 Wires say D.E.E.D 7
1 Wire says D.E.E.D 1
1 Wire says D.E.E.D 4

In what order do they go installed?

Picture of Old Spark Plug Wires Connected

1946 Chevy Truck Export Blue with Black Trim