Just came across these. A mechanical injection pumped Duramax action. Thing looks wicked in the second video. Im sorry if its old news...still cool though.

http://youtu.be/uk-2ViFLwPY

http://youtu.be/lzLfGme5gf4

yeah saw that a while back, pretty impressive, I heard of a guy who is going to put a mack pump on a pulling dmax cant wait to see how that works out. that massey is a nice looking build.