I do have a 460 in the garage so I think I'm going to take your advice. I appreciate you taking the time to help me out. I guess I should mention that this is going into an 1800lb T-bucket so mufflers and an x-pipe are out of the question. Also would you recommend a main girdle support or would main studs old up just fine? Any words of wisdom about those half price aluminum heads on ebay?? I'm a poor college kid, Edelbrocks might be out of my league for a bit.