Im running same as above NGK copper but with the V gap, V-power i think its called, dont have mod no. think its BKR-6xx sumthing or rather. Basically same as BCPR6ES but with the V tip, dont think it cost anymore either. Do a search u'll find it for sure. IMO Iridiums arent worth the $, only advantage they have over copper is life so u wont have to change them as often, dont think ull feel any difference in power. The NGK Coppers r cheap n very good, just MAKE SURE u gap them down to 0.8 or 0.7 for 200rwkw.