What year did ford come out with the better heads for the exploder. I have a chance to get one for scrap price and was wondering if these heads were the better ones. It is a 1997 and it runs, I have no use for the motor or vehicle but could use a good set of heads for the new 347 stroker I got a while back. It will be for sale as soon as I can get to it. For now I am looking for some better heads for it, if not it will be sold as a short block.