ABSOLUTELY NOT!!! Those are not headers. a lot of people don't understand what headers are so I'd like to clear it up for a few of them. Each single pipe on a header is the exact same length as the next. Cylinder 1,2, and 3 will have one header to them. The pipe coming off of cylinder 1 will meet the collector with the exact same length as the pipe coming off of cylinder 2 and 3. The same goes for cyldiner 4,5, and 6. See, the reason this helps is that no cyldiner is working to push the gases of more than one cylinder. In other words, when cylinder 1 fires, it only pushes its own gases through the header, same for cylinder 2 and 3. On our stock exhaust manifolds, cyldiner 1 and 4 have a lot of catch up work to do, in order to get the rest of the gases pushed through. Since each cylinder is pushing its own gas, it lets the engine run smoother and more efficiently, ultimately adding more power. Now, SuperSprint makes a header (singular) that makes all 6 cylinders the exact same length, adding even MORE performance. Just thought I might clear this up for you and anyone else who didn't realize it. Be careful, a lot of people think headers just have tubular pipes and are shiny, this is not true. In fact, a lot of inexpensive headers are black!