01 gt muffler help

any one ever just replace there mufflers i know they r welded but i was wondering if any one has some info on overall size and inlet/outlet size


i dont want to replace the entire exhaust just the mufflers

also i was thinking flowmasters would sound pretty good on this car its a 01 gt with a 3.8 but if any one knows of a better sound for this car and or have a sound clip please let me know not realy looking for performance the car is stoke with a kn air filter just looking for a bettersound
i also plan to use the stock tips