I think you could get the CVT or the Aisin transmission in these. Avoid the CVT. Aisin is an extremely solid transmission though & so is the 3.0L V6.
If it is AWD, beware of the transfer case (power transfer unit) issues in Ford AWD systems. The transfer case is not equipped with a drain plug & Ford says to never change the fluid, period, unless the unit gets submerged in water. The transfer case fluid usually sludges up, turns to grease & the transfer case starts spitting fluid out of the vent giving a burning smell. This usually occurs at 70,000-100,000 miles. Very common in ALL Ford AWDs. I know, I own two. The solution is to remove the transfer case fill plug & suck the old fluid out with a pump & refill. Best to do this every 30,000 or 1 year, but the PTU is likely to already be sludged of you get past 50,000. Catastrophic failure of the PTU is likely by 100,000 miles in ALL Ford AWDs unless you go against Ford's advice & change the fluid. This is usually a $1,500-$2,000 repair.