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Just one comment- If you have even a modestly sized cam (550/560 lift range), you cannot run the big 1.75 exhaust valves in a 428- the valves will hit the cylinder walls. The 1.75 valves were designed for the large bore 427 and will not work with the 428 unless it is bored within in inches of its life.
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I don't now about cast iron heads but this is not true for Edelbrock heads. I have a 428 bored .030 and I'm running Edelbrock heads with 2.19 intake and 1.75 exhaust valves. The cam lift is .609 on the intake and .622 on the exhaust.
Chris