I have a gen. V 454 mag. with 100 hours on it. I have already purchased some 496 aluminum exhaust with stainless risers. Couple of other things I have been looking at are a 420 cam, new intake and Holley carb. Anyone put together a combo like this. Just lookin to get around 400 horse out of the motor. Nothing to crazy or expensive. Lookin for suggestions on a combo that will work well together.