Hi Guys (and Gals?),
New to this forum but not to Mustangs. Got a question. I just came across a used 289 with interesting heads. Thes heads appear to be K heads with late casting numbers. The numbers are as follows: C8ZE-B Date = 3M20 HP. They have the narrow pushrod guides, screw in studs, cast in spring seats, but also have the holes for the air injection tubes. Are these just service parts from 1968? What value do thes have? Any info would help. I probably don't know how to post pictures here, but if any one is interested, I could e-mail pictures to someone that can post them. Thanks for your help.
Steven