spl310 Those heads are problem heads. If you could get them for $100.00 and know a great welder to do repair, go for it. There is no valves,springs,retainers, or clips. All the machine work is not done. By the time you get done with all the repair and machine work, you could have gotten a complete set of heads ready to go. Hers something to think about, you go out on a cruise, endup 100 miles from home and one of thoses heads break and you have a coolant leak all over. You need a tow home $200.00+ someone to pull apart the motor, the repair of the head, gaskets, coolant , sealer, and just maybe you get LUCKY with the repair again. Price for repair $1,000.00 if no coolant went into motor, double this if motor has coolant in
oil, looks like a shake and the motor needs all new bearings. Been there, seen this, all for trying to save a couple of bucks. Blue thunder, Shelby, or Edelbrock, even Dove direct, the price is not worth the problem. Rick L. Ps those heads failed a pressure test, they are a bad set.