everything I've read on this topic states the bassani w/o resonators will get you 1-2 more hp than the borla. never hear bassani, but I hear it's kinda loud w/o the resonators. I went custom...i have one muffler in the middle, 2.5" piping, two strait pipes after the split, and that's it. Kinda like 99redse, but I have an svt (1 pipe vs. 2 pipes). It's honestly not too loud, and it sounds very badass. Might be cheaper (depending on materials), and could even produce more hp (1 muffler vs 2 in bassani).
