If you have the ramhorn/center-dump exhaust manifolds, then yeah, route them as shown in the pic you posted. Cut to fit are great, but stock wires can be routed that way. It makes for a clean look, and the wires are out of the way. Just takes a little extra time to route them that way, which is why people typically don't. I know I didn't for the longest time, but I also didn't know they were supposed to be routed under the block that way. I was always chasing the right wire spacers took keep the wires off the manifolds. The first time I routed them the correct way it was so much better. I went with cut to fit on the last installation and recommend that personally.
