Reason I ask is I'm trying to build my car for street and auto-x duty, and full fenderwells are no good for this, and I might be able to get away with one tube in the wheel well. If not, I might have to sacrifice a little bit of flow and run smaller full underchassis headers modified with a W5 flange or something. All options point to fabrication by me to make things fit, but that's not a huge deal.