Thanks guys.
I'll find a 440 block for this build. I just had a nice billet crank that was the 2.2 rod pin and 4.5 stroke that I wanted to stuff into a 400 but a 440 is fine. For my Dakota at around 650 to 700 hp is no problem. I'll save the 400 for 5 speed Demon I hope to build in the near future. Again Thanks Joe