My car came with the Ford Racing model that looks similar to the Stack Racing. I loved it but had to remove it once I installed the plenum cover. The FR bar cleared the cover but dug into it once the car was in motion. I had to install the Steeda model below. Which by the way, does not perform as well as the FR bar. Are you positive the Stack clears the plenum? I may look at getting one too. I miss the tight feel of the FR bar.