JUMP on that opportunity. There are only a few reasons not to: 1, You don't like the color of the heads. 2. You don't like the way the ends of the heads look. 3. You don't want a higher performance engine than you already have.

On a more serious note, if the engine isn't pinging with the stock cast iron heads it won't ping with the Edelbrocks. Also, the angled plugs on these heads give some people who run headers fits. And it may be useful to have a cylinder head pro go through the heads to check things like valve stem clearance, although I'm sure there are hundreds that went on the motor right out of the box.

You will, IIRC, need a new set of head bolts because some of the lengths are different. You can use the stock rockers, regardless of what Edelbrock says. You may need to change pushrod length, but I doubt it. Anyway, pushrods are a lot less expensive than rockers!

Good Luck,
R.