I have been trying to build on line a new HO 3500 DRW, on the Dodge site, when you add the 68RFE trans, it says the new 800 HO engine required, that is what I want, but then it says 3:42 gears required, I want 4:10's, so I put that in, it comes back with single rear wheel required, I want a DRW, there must be a problem with the Dodge Ram web site?, I think I may have to wait a month or so for them to get up to speed, I want a 2012 anyway.