I can understand wanting to find a virgin GT3, what I can't understand is wanting one to use on the street? I currently have a 997.1 GT3, Until I got this car I didn't see much point to using a street car on the track. I would always use a purpose built race car. That being said the GT3 changed that for me after one day. I still enjoy the race cars the most but ease of use with the GT3 is a added bonus. i.e no trailer needed
-Limited production is making the car sky rocket
-The fact it is manual and the 991 has increased value.
You really can't compare the Turbo and the GT3. Two very different cars.