OK guys, I got the newer motor today and started looking it over. It is a vvt setup. So on first glance I see that the new blower pulley is a harmonic balancer and the 4.0 is not. Will that upset the crank if I replace the pulley with the smaller one? The next thing is the exhaust manifold is different and will have to be changed, so with that in mind along with making the intake manifold fit, and changing out the cams, wouldn't it be easier just to swap heads? Which brings me to another question. Has anybody reused the head bolts with success? The cheapest I have found them is $160 a set. I know these questions are the first of many things to overcome. Please keep in mind I am not looking to beef up hp, but to build a decent running car without going broke. thanks steve