Second one is the "GTR700" project from Exvitermini.com.
I've been following that site for 10 or so years now. That video, I believe, is from ~2003.
That site is what got me into turbocharged cars.
Their server has been down for a long time. Once it's back up i'll find the other videos.

Edit:http://www.youtube.com/watch?v=c0-UqLfzkAE