A little four cylinder now can compete against good old muscle. To give you an idea, the Talon TSi, bone stock with no mods, sits at 210 hp. Before adding the turbo, you might be able to crank 150 hp out of it. Okay, so with the Talon, you add a performance turbo. So think about it, you're increasing your boost times two.
More boost equals more horsepower.
Now you must also think about this. It also has an open-element air intake, making sure that none of the breathing is restricted. Just with the exhaust and intake, I'm going to estimate that you'll gain 50 to 60 hp at the wheels. That's a big boost, that's why I always suggest starting with the exhaust, then doing the intake, then cylinder heads and finally engine aspiration. Then consider the stock turbo.