Just bought an 02 WRX, it's my first Subaru and turbo vehicle. I have done some research and I am trying to decide what upgrades will meet my goals. My friend owns a Cobalt SS turbo with 20lbs of boost and around 300hp. I'd like my car to closely match his in numbers. What would be a better route to go- COBB stage 2 kit, or a "can tune" with intercooler intake and exhaust upgrades followed by a protune? Keep in mind I want to (safely!) maximize boost without overdoing it and try to closely match my friend's Cobalt numbers. Open to any positive suggestions, Thanks!