Converting a 2012 GT to a Roush Stage 3?
 

Has anyone looked into this? I'd like to convert my car over, she has everything exterior wise except a few minor details. So I'm curious how much it would cost to finish the conversion engine wise. I know I can just buy a super charger kit. But it won't be an official stage 3. I know you can call Roush for pricing but before I got to that just figured I'd see if anyone else already has.