Says 2.5" tubing for the exhaust kit, but posts like
Say the mufflers should be 2.25". Not entirely sure why they're different.
So the stock catback diameter is 2.25". These aftermarket unites are in fact 2.5", however, if you look at the ball / socket clamp, they will still fit on the stock 2.25" catback because they are necked down. So basically any of the mufflers you buy on that site that say they are for your v6, will fit your v6.