[blykins]

The difference would be those guys who are wanting a certain cast number for their 289 Cobras.

I've been helping a customer find a good core for the past few weeks. He has a 289 car and wants a 289 to go in it. I'll be stroking it along with adding some performance goodies.

If you have a 289 car and you're not worried about cast numbers, a 302 block or even a short deck Dart block would work great, depending on how much horsepower you're wanting to make. The 302 blocks won't stand much more than 500hp, while the Dart blocks will hold much more than that with no issues.