Cutting a custom set of Spark Plug wires.

The picture in post #9 is the clamp they send you in the box if you buy the MSD kit. It works very well if you read the instructions and take your time. All you need is a straight razor and a vice with it. I am not saying you need to buy MSD just that it comes with the kit.
Like said earlier, do your cap first and route wire where you want it to go mark it then cut and finish.
Good luck, it will be awesome when you are done.