Guys, I have been told (by a Toyota mechanic, no less, but a good guy and a knowledgeable one) that the new crate motors GM is putting out now have very low nickel content in the blocks and therefore tend not to last very long. Any comments or opinions? I love the fact that you can get a new ZZ4 for a decent price, but that comment he made makes you think. '79 - 406 w/IROC TPI - K5#5 - a <font color=orange>sickness <font color=blue>you never get enough of!!