I bought SSAC headers about a month ago. I bought them under the false impression that I might be getting a better quality header than SD. After I got them, I looked them over comparing to pictures of SD and believed that SSAC was selling SD headers as theirs. This past weekend, I saw a set of SD headers get installed so I checked them out in comparison to my SSAC's. Everything looks to be exactly the same. The welds, clamps, gaskets and even the packaging they came in are identical. If you are considering SSAC like I did, save the money and buy off ebay. It is the same product without the extra markup. Hope this helps somebody avoid the same mistake I made.![]()