JBA Cat4ward headers are available for '91-'06 Jeep Wrangler and Cherokee vehicles with the 4.0L I-6 engine. JBA also offers headers and complete exhaust systems for many other engine applications.

This two-valve Ford Mustang GT has the factory exhaust manifolds on its 4.6L modular motor replaced with JBA mid-length headers for Mustang GTs and we put them to the test on the dyno - 5.0 ...