Turbo a 5.0 and i'll smack you. Supercharge it and i'll be happy
No one Turbos high-displacement engines unless it's gonna be 2+ Turbos, and even if you do it's gonna cost you a lot more. I.E. NASCAR has 4 (yes, four) Turbos on theirs, and things like Champ cars and F-1's usually have 2 if any.