I don't know if any of you HF owners have looked at our wacked exhaust systems latly but they are pretty stupid lookin'. I know the exhuast ports and bolt patterns are the same as the DX and the DX has a normal Manifold to cat to back cat exhaust. I was wondering if I were to change my HF exhaust to a DX, would I gain and horse power? I was thinking of just finding a DX manifold then an after market cat then a SI backcat Exhaust. I don't know what brand of exhuast to buy. Probably A'pex or Greddy but I think they are realy expensive. Please let me know if you have any ideas cause I'm getting sick of losing to lesser cars.