Awhile back there was a group buy arranged for the ngk platinum spark plugs for the rc51s. I brought in 32 plugs and only sold like six. I'm going to return the rest at the end of the month. If any of you rc 51 owners want platinum plugs at a really good deal, pm me. Or you can come to Lordco Metrotown between 4pm and midnite and ask for Darryl.