OK Ensit, if you are serious, don't even look at the NA version. Though fairly quick, they haven't modded well, at least not as well as the supercharged SRT.
Stangs are good for push and go fast. That is what you are used to so I doubt you're looking for a nimble sportster for the twisties.

There are plenty of serious mods to increase boost and CAI airflow kits.
Check out the SRT threads.

You'll be stuck with an auto trans but you will learn to like it.

As to bang for the buck, a decent SRT can be had $15K to $20K. This at 330 stock HP.

Add $3K to $5K (pulleys intake and exhaust) and you will be over 400hp on a chassis that weighs less than 3,400 lbs. Get an ECU tune and own the streets.

And FP is right, black is faster.


roadster with a stick