I have a 2000 camaro and I am trying to customized it I already put on magma flow exhause and i am now changing the water pump and the head gasket what else can i add to it to get more power/performance

 

I'd install a new performance exhaust manafold for the new muffler that will improve milage and some performace as well as makin that new exhaust tuned a lil more. After that maybe look into purchasing a performance chip. And get a new air intake also if you havent yet cause that factory setup isnt so great for gettin air but still gets the job done. Also next time be detailed about your engine model and some one here will be able to be alot more specific with their answeres.