[cobralee]

No debate intended. However, as practical as the 393 might be with power, 93 octane gas, etc. why not go with the original 427. You can still run 93 octane, and when people look in your engine compartment, they'll see a true Cobra motor. You can make the 427 streetable. In mine, I have a 427 running about 10:1 compression. I'm considering rebuilding it and if I do, I'm going with 11:1 - 11.5:1 compression. To me, there's no substitute for high compression. Just my .02