[1968 nova ss]

Marlin,I changed from the ac delco to ngk on my restored 68 nova ss 396/350hp ,turbo 400 ;matching#car.The car had a slight miss;went away with the ngk.rob clary had mentioned to me that the ngk had a less chance of spark failure than the ac delco;dyno # proved it.chris Teed best et with F70 redline tires 13;28 with 3;42 gear