I've replaced a regular 2.5SE with SVT exhaust before and the diameter is the same anyway between the two... looked identical to me with the exception of the split at the rear to two tailpipes instead of one. What center are most people putting in, what brand, lengh, and size... for stock SVT exhaust, and what impact would that have on the sound? I would imagine that if you replaced that piece even on stock exhaust with a "high flow" version it would simply get louder... cut it out and it would rasp like hell... that's what I would think.
