I have a 96 Mustang GT with a moderate amount of mods. I had an MSD DIS-4 ignition system that was mediocre at best. A local racer said that I should just run a good set of plugs and wires instead. I purchased FRP M12259-R464 plug wires and was going to purchase a set of NGK Iridium plugs but I stumpled across the new Pulstar plug that makes some serious claims about power, torque & economy. Has anyone had any experience with these plugs? Are they worth the price of $25 each?