Found that I had a bad rattle in the cats when the truck was cold but went away when warm. So as a quick fix I dropped the Y pipe and hollowed our the cats for the time being. Along w the check engine light my fuel economy has gone to **** and I travel a whole lot. So if anyone can give me a suggestion on a new Y pipe w cats or an entire exhaust that would b great. Can't really afford anything crazy in this economy which is y they were hollowed in the first place so in just tryin to find the best bang for my buck. Thanx