Plug wire routing.....
 

With my new headers I am thinking I will have quite a bit of room to run the wires under the primaries, good or bad idea?

If I do what is the best way to keep them managed so they are not loose?

I did it that way, plenty of room. I used different bosses on the block as well as the hardware that mounts the knock sensors as points to secure the wires.

^ Hey Scott can you post a pic of that? Not sure if it'd show w the headers installed...