I just purchased a 2004 SS Silverado with 60,000 miles that is completely bone stock. Im ready to put some money into the engine. I want to spend around $600 or less roughly and get the most bang for my buck. Since I am a new member and new SS owner I dont really know what the best brands and options are for my truck to get the most horsepower. For example I dont know which cold air intake to get or chip or even if those are my best options to be able to spank hemi's and lightnings. I am not looking for exhaust yet so the $600 is not including exhaust. Thanks alot for the help fellows Im sure yall can give me some good ideas. Thanks