I have a slight problem. The 455 is in my GTO. The 428 is in the garage, not inside a car. I have no way to get you the right measurement. What I planned to do was measure the drop from the hood to the Offy in the GTO, then swap in a stock manifold and repeat the measurement. The difference would be the height difference, naturally, then I was going to add in the 1-1/4 inches. But I still need the measurement from the hood to the manifold inside the Bird. that's one I can't get at all.
