What changes did you make to the Autolite® Pro-Fit wires?
A. The Autolite® Pro-Fit spark plug wire line has fewer consolidations, providing for improved matches. The line features original equipment style spark plug boots, which are pre-greased for easy installation and removal. The wire outer jacket is now made of high temperature Silicone Insulast® jacket material, and comes in oversized wire diameters for those applications, which can accept the larger (and superior) wire diameter.