I have a matching set of 63 low risers off a 427..Bought them a couple months ago and then decided to go with aluminum.Paid $500 and shipping was $80...They are complete with valves and double springs...will let them go for $350 plus shipping...will give you c3# on contact....407-385-5808....have adjustable pushrods for same...new...$50 also have complete tripower and complete dual quad