This is one of those open ended questions, your going to get a million answers. So I'll tell you what i've been told from a tech at Jocobs Electronics. The +4 plugs are useless, champion plugs are the worst on the market and autolite plugs are the best on the market.
My advice, use the plugs that your dad used in his cars
My advice, use the plugs that your dad used in his cars
