I have a set of these heads in excellent condition with absolutely “NO“ issues at all. The only reason I’m selling them is, I had them on my old engine set up. I have since, sold my old block and bought a new Dart block and Dart Pro 1 heads. I bought these heads new, years ago and have had them updated for my Drag car, that was rarely driven on the street. The updates include new Anderson Springs and Titanuim keepers and retainers, new valve guides and have been surfaced, pressure tested and a Competition valve job. I’ve had these heads for at least 10 years and all the machining was done about 5 years ago and have been ran 1/8 mile races all their life. I was turning 6.90s naturally aspirate. They’ve been sitting on my shelf for a few years now, in boxes, with intentions to build a nice street engine project, but am sticking more money into my Dart set up so might as well sell these. Asking $850.00 for the pair plus the ride. Can send pictures, to a text and/or will post pictures here later, if someone is really interested. Pretty much sticking to the asking price, believe me they are well worth the cost with the updates.