Heres the difference between a stock manifold and Gibson headers. These headers were my favorite mod up until I got a Superchips tuner. The Gibsons combined with the GSM Tru Duals really made a noticeable increase in HP.
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.