Originally Posted by chiefneil

We went from an '02 3.0 to a '12 3.5i (this is my wife's daily driver). For the most part it's a huge upgrade in terms of quality and materials.

The 3.5i is a significant upgrade in terms of power, but you're getting the 3.0 engine which isn't much stronger than the one in your '02. Combined with the weight gain of the E70, I don't think you'll see any difference in acceleration.
Hope that helps.