I have a 91 YJ (2.5L) I want to upgrade the ignition system so I wanted to know if I bought the Blaster coil, would that make any difference in the way my jeep runs? I have Champion Double Platnium Spark plugs and Brand new Autolite spark plug wires. I believe they are 7MM. The coil is $38.00. I wanted to know if it was worth the money and if it would make a difference in the way the jeep rides and power.