I know you were looking for 3. 73 gears, but I think you'll be glad you got the 4. 10s. With the 68RFE double overdrive transmission, highway RPMs are loafing compared to the old 47RE or 48 RE or either of the 6-speed manuals - 1612 RPM @ 60 MPH versus 2000 RPM @ 60 MPH with my old 2002 3500 with Cummins HO/NV5600/4. 10 axle ratio, and they will make towing a breeze. In effect, the 68RFE gives us that "7th gear" that those of us who had the 4. 10s before the 68RFE always wished we could reach for.
Rusty