426 stroker kit

I ran across this article a while back from Hughes engines .
This would be more of a drag racing engine to me, not sure what you are building

http://www.hughesengines.com/TechArticles/21740hpgen3hemi.php

Also saw where guys are getting 600 flywheel hp without loosing any gas mileage with a milder build , which would be perfect for a street car

http://www.challengertalk.com/forums/f18/426-hemi-stroker-mpg-39450/