Applicationfor LS LSX Engine 4.8 5.3 5.7 6.0 6.2 Specifications Quanity: 1 left bracket + 1 right bracket + 8 M10 bolts Warranty: one year warranty for any manufacturing defect Condition: New Notice Used for older compatible for vehicles with clamshell mounts to a new LS engine. Eliminates the need for adaptor brackets, lowers the center of gravity, & achieves 3 degrees of motor angle. 73-98 compatible for chevy trucks & other cars that use the clam shell