As far as rear axles, this looks like a good way to twist and jam a stock e-locked rear.
http://www.youtube.com/watch?v=YEhT3JeyBF0
Looks like 37's, foot to floor and bouncing.
http://www.youtube.com/watch?v=YEhT3JeyBF0
Looks like 37's, foot to floor and bouncing.