Most restricted parts?

[Jim R]

Hi folks, I just bought a 97 Cobra Mustang with 45K miles on it. I was wondering what the most restrictive parts are? More to the point, is the stock exhaust more restrictive than the intake? Just trying to find a starting point for some mods. I have welded in subframe connectors and strut tower brace so I believe it's time for some power adders. I also have the BBK CAI.

Thanks,
Jim.