I haven’t had much experience with foreign motor. Have always used autolite spark plugs. I don’t think the engine in this truck likes them very much. I had my truck in the driveway idling on the telephone, all the sudden the truck develops a dead miss like one cylinder was not firing. I pulled the plugs out this morning nothing really looked out of the ordinary ( a little carbon on the plugs nothing appeared to be blocking the spark ) cleaned plugs reinstalled running like a top??? I have installed a accel coil a month or so ago. Thanks for the input