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The Edelbrock Performer RPM heads are a nice easy bolt on. They do have a slightly smaller combustion chamber than the stock heads so you may see as slight increase in compression rate. You will also be moving up to the 2.02 valves which will let it breath better. When you switch to the aluminum heads you may need to change the pushrods as well. If I remember correctly Edelbrock suggests a pushrod that is .10" longer.
I have used them on a few engines and been very happy with them but any of the suggested heads will make that engine "wake up and breathe" better than it did.
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