YamahaBound

I've seen a few posts on it now where if emissions isn't a concern you can get heads or an intake that perform better, is this like drag only level? or are there kits that work good for dd/street or weekend warriors that are already nice and matched up together like the TF street heat i/h/c kits? I'm in florida and hoping to find a kit that was designed to go together that comes all as one with all the parts needed like the Trick flow package does. I've got a guy that works at a performance parts shop that will do all my work for half the labor rate at his friend's shop, I've just got to pick the parts.