Good Bye Flowmasters!

hey guys, anybody know if a 6" round case muffler can fit under the floorpans? i ordered 6" rounds like an idiot not measuring thinking they would fit and it seems like they will be a little big (I should have listened to my dad damnit)...I plan to dump the exhaust and was thinking of tucking them on an angle under the raised area of the floor just before the rear axle