First off, are you ready to
TUNE and say byebye to the warranty (for the most part)????
You’re main area is going to be the V8 Bolt-ons section found here:
http://www.camaro5.com/forums/forumdisplay.php?f=11

is going to be your biggest friend! Along with the great vendors and sponsors we have on here that can give you great knowledge and products for your build.
You can start with:
Cold Air Intake (lots of threads about those if you do a search, I went with CAI Inc because it had some of the top numbers in an independent test on here as well as it looks great with the enclosed case and black powdercoat)
Long Tube Headers, again lots of threads on this and brands (Stainless Works [they have a cheaper non-USA made version like Stainless Power or something, Kooks, ARH, TSP etc…) I went through Chase@Apex here on the forum for my Headers and Suspension parts, great guys and great service!
VMAXX Ported throttle body will help with a little bit of HP increase but this paired with the cold air Intake really helps the throttle response (JDP Motorsports, SC2150 and others sell these)
Aftermarket exhaust (cat-back or axel-back) depending on what you do with Headers and also $$$, there really isn’t any performance gain with exhaust besides the weight reduction but you will get a great sound from many of the systems that are available. Lots of threads on this as well.
Lots of
Cams out there from small, medium, Large and again lots of threads to do some research and find out what’s right for you.
Suspension is another issue you will need to pay attention too when you start climbing higher in the numbers to help eliminate Wheel Hop on the Manual transmission. Usually some good Trailing Arms and bushings will do the trick among other suspension components (Pfadt and BMR are the top suspension that I have seen, I love my Pfadt products!)
Of course there are things like the FAST 102 intake, which from what I read really isn’t a great gain unless you have a monster CAM or larger cubes. There are Oil Catch Cans to help keep your engine clean. Pulley systems..you name it there are things you can do...
You can always go
FI: supercharge or turbo… though you will need to beef other stuff up as well.
Many different ways to go when it comes to this so don't be surprised when you get bombarded with responses and questions.
MAIN THING TO KEEP IN MIND: You need to focus on what you can afford budget wise and what your overall goals are for the car and how you want to drive it.
Hope that helps
