Thanks Jeffrey, that will be useful.
Jerry, that's what I'm trying to avoid. I want this to be an engine update, not re engineer the whole truck by trial and error.. When I was asked about putting an LS1 into the 51 COE project I had a bare frame and bought the foam mockups, block, heads and auto trans to prove it couldn't be done w/o making a new frame.
People have done this, or at least attempted it, before. The beauty of forums like this is that people with experience and knowledge are willing to share it so other people they don't have to reinvent the wheel over and over again.
As far as power goes, the client isn't going to be happy until we have 327 with 300 - 325 HP, so I'm resigned to that. At least it will bolt up to the 700R4.