heads!!! if not heads then a cam but to do things right you should get a cam for the set of heads you put on it not vise versa... If you don't plan on doing a head swap anyway that doesn't really matter.
According to his sig. Snoozer runs a high 12 on stock heads... Sorta hard to believe but who knows...
Im confused: It says in your sig that you have 24lb injectors.. You still have stock MAF? You have a cobra?
if u have injectors and stock maf, change that right now, computer doesn't recognize the injectors. so i would say do the t/b and mass air before you go with a cam. like moneypit said, heads are better than just a cam. but if you don't have the money for heads do the mas & t/b.
Don't expect miracles. I doubt that snoozer is consistantly in the 12's. It may be just a freak of nature.. There was one guy that use to be on here that put his stock cobra in the 12's. I personally would suggest to save your money and put some decent heads on there.
If you must get something other then heads go with an MAF and or TB, there always useful later.