At loosing 30-40% at full elevation here I think it would behouve them to get the 2.5 turbo. The 3.0 would only drop to 175 to 150 hp at 10,000 feet, BUT that might be too much of a drop. I don't want them later wishing they had bought the turbo. Thank you everyone for your help and input.
If you ever need advice on Jeeps or Volvo's hopefully I can give some help back.