I recently went from Tubular Automotive headers to TTI s and they fit a lot closer to the trans and shield the bottom strap is really close to the collector. I have a Turbo Action shifter and had to modify the shifter cable bracket clamp as it is exactly were the collector flange meets the exhaust pipes. Seeing how close the shield is to the headers I can't imagine how tight a blanket will be to them. But I am sure there are a lot out there with a TTI blanket combo.