Trixter - Oops! I'm sorry..no, the outdrives are different from the 1 to the 2.
davidka - I'm using Adam Drake's standard setup, which is available on the Losi website. Click on setup sheets, then MF2! I do switch back and forth from long arm to short in the rear...short arm is more forward bite, long arm is more sidebite.
Cain - Losi's race team is trying to learn how to make their cars better and switching pieces from the XX-T CR, MF1, and MF2 trucks and learning what the changes do. It's all in the name of research and development. There's nothing wrong with the MF2 rear end that the racer needs to start changing in order to be competitive.
Don't worry about buying an MF2 just to have a new kit come out and make it obsolete. While Losi is always working on new stuff, there won't be a new electric truck for a while.
The kit setup works really well on a variety of tracks, and is meant to be easier to get to work basically anywhere. I like the Drake setup as it suits my driving style and it works great on blue groove tracks.