I have a question. I wanted to delete resonators and put a straight pipe and swap factory mufflers with super 44 flowmasters. The shop is saying that the mufflers are too big and wont fit where the skinnier factory mufflers are and they want to put it back where the resonators are. Is this ok or did others not have a problem putting mufflers where the factory ones were. ( Oh by the way info says I have an SXT but i traded it in and pulled the trigger on a 2015 sublime R/T).