We'll, the head casting number is the same as my other two heads are, 3836848. It also had GM21 CON9 and J 12 1 on it, according to the seller. He wasn't able to tell me any details other than it was all rebuilt and had hardened valve seats. He's thinks he has the receipt but has to look for it. So given that somewhat vague info, what range should I be willing to pay for it?
