Ford 6.7L 1050 ft lbs TQ at 1,600 rpm, 475 HP at 2,800 rpm

I think those extra 4 gears would make a big difference even if it didn't have more power. I think my 6.2 would benifit with two extra gears in between 2nd and 4th. I'm not going to buy a new one but I did it would have to be a 10 speed.