i have just bought a pair of flow tech, shorty style headers, will this fit my exhaust y pipe that is already there from the origanal manifolds or am i to buy a new y pipe to have the origanal exaust set up? or am i just **** out of luck or am i in luck? i could use some help here guys...
or should i say oh i wanted tubed and run them back, that is if its worst comes to worst.. please i need some help here

 

It's pretty certain they aren't going to fit with your stock y. Even if they did, you wouldn't want that, there's not much point in replacing your headers if the exhaust is still running into the same crimped ypipe. Most guys replace everything, headers, y, cat, all piping, muffler, tips.