Cool...that should be awesome. I'm actually doing a new Cobra (have it on order - turn-key minus) and haven't decided on an engine yet. I had a 1970 Boss 429 in the late 80s and always liked the look of that engine although they performed much better on a NASCAR track at 6,500 RPM than on the street. I know with all the new parts advancements, aluminum blocks etc they would probably be pretty neat now. Like to hear more as it develops for you including some pics of the motor etc.
Just stumbled across this............
http://www.youtube.com/user/detroit1.../0/9WbjET40gbQ