The only better plug that's worth considering is the commercial version of that plug, the CR45TS. It's designed for delivery trucks, etc., and has a larger electrode and ground. The 45 heat range might be a little hot if you're going to do much highway driving. We use 43's in the race engines, so a 44 might be a good compromise. The higher the number, the hotter the heat range, on an AC plug. Don't get tempted to throw away good money on "Platinum", or some other gimmick-type plug! It's hard to get better than the original-equipment plug for any engine. We used to change plugs every week on the roundtrack engines. When we switched to the commercial plugs, it's every 3rd. or 4th. race night, with no noticeable loss of performance.
Jerry
