I have 2 sets of 088's available. One set is stock, other is fully race ported. The stock set has stock springs valves and hardware $1,000 for the set. The ported set has a full race port job on runners bowls and chambers, this set is also with stock hardware and a 3 angle valve job has been done on them. These heads flow big numbers when fully ported and make nice power. Turn your 500 HP into 600 with these heads and some compression $2,000