Only at a sanctioned drag strip, which is becoming a dying breed. Headers for me. I bought a set of Appliance headers back around 1978 and used them until three years ago. They were a little thicker than most other brands and I painted then every two to three years to keep the fresh. I noticed a big difference from the stock manifolds. Appliance is no longer around, so my suggestion is buy the best you can find and take care of them, and they should last. You get what you pay for.
