Engine change problem. Water pump impeller chewed up....Where's the pieces?

[Byron in Atlanta]

http://www.youtube.com/watch?v=lPBjaIOwERU

I first heard the clatter at 45 sec, it quit running at 59 sec. Suffice it to say that it was running poorly those 14 seconds. I mainly coasted down the esses, and only gave it gas again to try and power up to the exit road. When I gave it that little bit of fuel is when the big puff of smoke happened.