this is for a pair of D1AE-CB 351c 2v cylinder heads that came off of my 71 mach 1. these heads ran great and had no issues other than it was time for new springs. so there are no springs on this pair but does include the origional valves 2.04/1.68 with open chambers. no cracks and all threads are good.the car these came from had been sitting since 83 when my uncle purchased it.i got it 5 years ago to restore and drove it occasionally and had no problems im parting with these because i have aquired a 351cj to replace my motor.as with all of my auctions these will be sold as is with no refunds.i only ship to the lower 48 states.