I think the heads that I have are C3OE but theyve been ported and polished. NOS though. I have a couple sets of 3J date codes but those are out of your date range and are also C3OE... I'll keep my eyes out for a set.
Hello, I have a set of 3b21 and 3d18. They are complete and original. Give me a call if you want to work something out on them. THanks Tim 916-548-1255