Wish it was that easy
https://www.svtperformance.com/threads/what-is-the-size-of-the-stock-exhaust-on-the-13-14-gt.1103295/
From the pics of the stock exhaust, a 2.5 catback would be a tad larger than the stock. True where the axle back connects are 2.75 but that's just the ending
I haven't...