I am enjoying the discussion, not an argument I hope.
I have a non-svt with a 2.5" mandrel custom exhaust.
Lets look at a price comparison. I think that mandrel bends provide more horsepower and is cheaper.
Dynomax WLK-17230 $50
Dynomax WLK-17219 $40
Mandrel-bent tubing $72
Straight pipe tubing $17
Muffler Shop labor $40
Chrome tip $10
Total cost $229 its aluminized not stainless.
vs. 2 1/2" stainless steel pipe, Dynomax Ultra Flo 17263 muffler, Magnaflow 14415 muffler, and 4"" polished rolled stainless steel tip. $540.00