I got a couple of questions about a 454 motor. In particular, 353049 Oval Port, Block #999289 High Performance 72-78. I have a few parts I am getting together to complete one, just wanted to get some ideas/opinions. For the intake manifold, I was going to go with a dual plane, oval port, natural, spread bore from Edlebrock. Is there anything that would work better? For headers, the primary tube diameter is 1 3/4in. Does the size matter in the overall spectrum of things? An Edlebrock carb with 750CFM, electric choke, square bore. The cam in it is hydraulic with a low idle. Suggestions?