I have built around a dozen mufflers for Vxs and installed 4 on VXs, 5 on Axioms, and 2 on Rodeos. I build a 2.5" in/out on the same side. I can also do duals or a larger outlet pipe if you so choose. Please feel free to check out the link in my Sig for pics, prices, sound/video clips of my mufflers.