I recently bought my first boat, a 1996 Neptune W/A with a 200 Evinrude Ocean Pro. I got replacement spark plugs for it but accidentally told the guy who helped me I had a Johnson 200 (brain fart). He even gapped them to 30 for me per Johnson specs. The numbers on the new plugs are slightly different but they look exactly the same. I don't want to make another trip to the store so could anyone tell me wheather it will make a difference if I put the plugs for a Johnson motor into the Evinrude. Thanks in advance for the info.