For those of you who may travel North through South through the Quad cities to Monmouth, and or Laharpe, you've traveled over the patch of 67 he talks about.
A friend of mine was doing kinda the same thing with his 69 Z while under the influence. He mistakenly though he was in a lower gear, and dropped into 2nd from 4th. They saved one head, and the intake. Looked like a grenade went off in the block.