Hooker BlackHeart announces the release of two new transmission crossmembers for GM 4th-gen F-body vehicles. Each is designed for use as part of Hooker's LS/T56 swap for this vehicle platform, or as a direct stand-alone component to accomplish a non-OE transmission swap into a 4th-gen F-body behind an LS engine. . Optional brackets and spacers are available to accommodate the installation of a 4L60E, 4L80E, 2004R or TH400 transmission into an LS engine equipped 4th-gen and/or for providing a divorced torque arm mount for use with any of these transmissions. Also available is the Floor Brace and Body Notch Panel, CAD designed for direct compatibility with Hooker and other brand 4th-Gen F-Body dual exhaust systems.