Hooker Engine Mount Brackets. LS Swap Engine Mounting Brackets. Facilitates the installation of any LS style GM engine into a 1967-69 GM F-body/ 1968-74 X-body LS Oil Pan 302-2 can be used with these mounts. Specifically designed for bolt-in compatibility with the Hooker transmission swap components. Installed using the improved design 1972-up GM clamshell engine mounts. Subframe adapter plates are included. Fully compatible with Holley LS swap oil pans and accessory drive brackets. Provides an engineered engine/transmission inclination angle that is critical to obtaining usable U-joint working angles (especially in lowered vehicles). LS Oil Pan 302-2 can be used with these mounts. In order to achieve the intended fitment and clearances of these components, it is highly recommended that new clamshell mounts (Holley P/N 71221004HKR) be installed at the time of installation. Integral part of the Complete Hooker swap system for this application. Components feature unique design geometry that is not compatible with any other brand of transmission crossmember or headers.