It's a tight fit even with the 3.3. I would know lol. And it's not even AWD. Can't even work on the turbos without lifting up the block. I will just cut out the apron since I'm replacing it anyways.
You might actually be able to swap in the bottom end of the 3.8.. There's a possibility that the 3.3 heads would bolt right up. It's also extremely likely the block will bolt right up to the tranny as well. If both those things are true, then you'd just be able to plug n play everything. Unless of course the deck height is different (it probably is).
Either way, the OEM turbos would be an even bigger bottleneck, though... Still, would be pretty cool.