No recalls apply, the cores do go bad - I just did the one in my 84 4kq. Not bad, but the a/c evaporator is in the way. You'll need a helper to get it out, or you can simply remove it if your a/c is broken anyway... | Dan | -- Dan Simoes dans@ans.net ANS Communications http://coimbra.ans.net/dans.html 100 Manhattanville Road (914) 701-5378 (voice) Purchase, NY 10577 (914) 701-5310 (fax)