and it has to get good gas milage

I had thought about the crate motors, but was concerned about the compression ratio, I thought the crate 426s were about 10:1, and I didn't want to go past 9:1 for a blown street motor I thought was the norm, but I could be wrong.

Thanks for the help so far, but no one has given me a definitive answer yet, still looking for that "Oh it has to be ...... because of....

Mike