spark plug wires

I have a 1990 lumina with the 3.1. how do i get to the spark plug wires that connect in the back. i can get at the front but the go to the back. how do i get to the back of the engine to take them off?

Unbolt the front dogbone mounts and rock the engine forward, use a come along to hold it there or a small 2x4 at the back of the engine to the firewall.

Unbolt the front dogbone mounts and rock the engine forward, use a come along to hold it there or a small 2x4 at the back of the engine to the firewall.

How long does the 2X4 need to be? :)

Just the width of the 2x4.