And, if you should choose to make your own, there was an excellent article a couple of months ago in Hemmings Sports and Exotic Cars Magazine with pictures showing how easy it is to make your own plug wires. If you cannot pull up the article, let me know and I will send you a copy.
I make mine using 8MM wiring, which will fit through the looms with a loving touch, but the 7MM will work just fine. Tifosi is right on the cost. I can purchase the materials and make two sets for what I would pay to buy a to buy single set already made up.
I get the satisfaction of making it myself and, if one wire should go bad (do not ask how I know that can happen), you can make up just one wire and not have to buy a whole new set just to get a single wire.
Dean