Bassani=2.25"
Bosal=2.25"
Borla=2.25" to 2.5" in the rear (I heard)
Brullen=2.25 or 2.5in, I can't remember and I don't even know if they're made anymore.
Yo-Dude=2.5 or 3"
Stock SVT=2.25"
I'd be interesting in a comparo of ANY of those. So far I've only seen the bassani vs. borla, which was erratic at best.
