400 to 512 Build

don't know if your street driving or not, have you considered the Indy tunnel ram for max wedge ports? the one on this engine works killer on the street and strip. seems to make a ton of mid-range torque. kind of a similar build, just the 499 kit, cam is in the same ball park.

http://www.bigblockdart.com/forum/showthread.php?15637-69-street-STRIP-dart

here's a video of it on the street
[ame="http://www.youtube.com/watch?v=buCVoeyv1TI"]YouTube- 69 Dart Swinger In Car Ride!![/ame]