I bought the conversion mounts and torque strap at the same time as I bought my Headers from the Schumacher guy at Carlisle some 7 years ago. Put it all together and drove it for a year like that. A 440 with Stealth heads and six pack set-up. I really didn't like the sound of the open headers so the next summer I went back to Carlisle and bought the 2 inch TTI's . A little bit more work to install but well worth the effort. Sold the Schumacher's here in the sales section.