Shortymac
her is a good article about a be different 6 build. I am sort of using it as a basis for what I want to do with my 70.
http://www.truckworld.com/How-To-Tec...vy-engine.html
One thing, if you are going to tear into the engine to do alot of this, you mihght want to do what that guy did (and TX Firefighter said) is start your rebuild with a 292 block. That extra bit of cubes and the low end the 292 provides makes a BIG difference.
Be different and good luck.
"Keep em Inline!"