Turbo or N/A w/Nitrous
We have full street trim cars running 8-900 rwhp everday. Some of the rear mount turbo guys are running close to 700 hp. I would recommend asking a lot of questions in here about specific applications and requirements. You have to account a few things into your build, retain accessories or not, turbo, supercharger, 2 power adders, computer, fuel system, charge cooling, how much absolute power you want to run, and many more. I would say turbo all the way as it is the most efficient power adder and plus it sounds cool
Good luck. BTW i am going twin turbo.Greg


