Some people would argue, but I just put in some Autolite double platinum plugs at the advice of many on this site. The plugs came pre gapped, so that shouldn't be a problem. I was told that certain plugs will cause problems down the road. I about threw my shoulder out trying to free the old plugs, so I gave the new ones a small shot of anti-sieze. Have fun changing the plugs, it was an experience!