I would go stock, as they tend to bring more money over modded cars.
With it being a Pace Car, they bring in more as well.
Not sure what info you want, as they have been tons of write-ups on these cars.
Usually the turbos go out before the engine.
Replacement turbos are no big deal, but I would try to keep the heads/block together with matching numbers.
Tell us more about the car, the shape it's in, and post some pictures, so we know where you are in condition of the car.
Feel free to ask exacally what kind of info you need.
Hope this helps somewhat,
George