Misc. questions / comments:
1. At what RPM do you want to shift it and how high are you expecting it will turn through the traps?

2. Don't get hung up on the intake / exhaust % #s.

3. I'm not a small-block person, but think the 259/263-107 would have have good mid-range and decent top-end. However, with your compression that one might be better on a 106 LSA, too.

4. Which one did Brian H. spec? I know he's got a good bit of small-block experience.