yup. i know how everyone runs the 7s as one range colder over stock and people have trouble finding the 8s on ebay and there expensive but i just found a set of 9s as 3 ranges colder over stock. i just replaced my stock heat range iridiums that had a heat range of 6. bkr6eix. also i gapped them at 27 thousandths of an inch. there very nice and cold and if u got high boost or if your on the bottle then i suggest these.