This is mostly for Sambo...but some others may not have seen these videos of a gardener douglas (UK based cobra kit) powered by an LS1.
http://www.gdcars.com/html/media.html
There's two videos but one is a 36Mb ride in the Demo thru the countryside on public roads, the other a 21Mb (low Res) high speed run around Elvington track.
I really like the Elvington footage.
Sambo, this will give you some idea how hard these things go.