If you're looking for performance exhaust components for your ’99-to-current Mustang, American Racing Headers [(631) 608-1986; www.americanracingheaders.com] probably has what you need. At PRI, the company showed off its '07 Shelby GT 500 headers and X-shape crossover in off-road and catalytic forms. The headers are made from stainless steel, boast laser-cut flanges, and merge-style collectors with scavenger spikes. American Racing Headers has these setups for '99-'04 Cobra and GT models, as well as '05-'08 Mustang GTs.