Assume were talking spark plug wires here. Unless you are concerned about radio interference you do not need resistance wires or any other type of resistance in the high energy circuit. If you are just referring to the end that connects to the plugs (the boot) there are clips that were popular in the early years (if you are not attempting to remain original). The type I like are the Rajah Clips (with solid core Packard 440 type wiring).
The Hot Rod Company has several options for plug wires and ends:
http://www.thehotrodcompany.com/shop...y=bsp&first=20