Even better then. Personally I think if you really like a deeper tone you can do whatever size exhaust you want. If you go 4" mandrel you will definitely be robbing HP for sound, but hey if it's a show car just for fun, then I say whatever floats your boat, but if you are looking to DD or for performance than 2.5" mandrel is probably your best bet. It leaves you some room for upgrades, but isn't TOO big right off the bat. 2.25" might gain a few HP, but then you have to redo the whole thing when you upgrade. And we always upgrade
