Since we're posting youtube vids, here's my 12.7 @ 109 turd running said K20 when it was a bit slower than it is now...
http://www.youtube.com/watch?v=IZvbBg0BxMw
Keep in mind his car is a DD and has been for 3.5 years, so its never going to be set up for a dig. You should run it from 2nd gear to see what's up.