alright, i smacked my passenger side cat on a speed bump pretty good and i think i broke it. ( when i get on it at about 3500 in 2nd and 3rd i hear a rattling sound coming from under the car near where the cat is). my local muffler shop said if i buy the cat he will charge me $100 to weld it in. so i was thinking about just getting one of the catco cats for like $50 out of summit. if i do this will it screw up the flow of the cats if i have one of the old ones and one new one?