How to install Kooks long tube headers on an S550 (2015-2023) Mustang, but also applies to S650 (2024+) as well. Covers installation tips and tricks to make installing Mustang headers easier! These Kooks long tube headers feature stepped primaries and 3" collectors and use Kooks green cats. Stepped long tube headers are the best, and we show you how to install them! Also features how to support a Mustang engine when installing headers on jack stands. No lift required!