I doesn't need anything other than de-lifted, back to 35's, and efi live. As you sit minus the trans you are good to 500+ rwhp, no need to throw parts on it when all you need is efi live and a good tune.
First and foremost it needs to be gone over mechanically man, there has to be a boost leak somewhere in there if it is smoking like that and feeling doggie. A superchips isn't gonna huf and puff like that even on its highest setting.