duramax/allisoned whata the advantage over the 04 model?

[ssgharkness020147]

The duramax has a ton more power then the 6.5, the people who want the D-max in the H1 want it primarily for on road driving. From what I have heard the H1 needs a two inch body lift to accomodate the Duramax.
The Allison is a VERY heavy duty trans with the proper computer upgrades it can handle 800 ft.lbs without having to rebuild it. The fifth gear is also a nice feature.
Its a dry heat if your breaking lots of halfshafts you should look into doing the 12K axle upgrades which can be seen on Scot Smiths website (www.southernaxle.com) you will probably never break another halfshaft again.