Turbo Mustang Mach 1 Header Installation Instructions
How to install Hellion's 4-1 turbo header for 2018+ 5.0 Mustang, Mach 1, GT350, and Bullitt with step by step instructions, tools needed, and tips to save you time.
In future videos we will continue with the complete installation of the Hellion Street Sleeper twin turbo system on my 2021 Mustang Mach 1.