LOJ Conversions 300ZX Gen 3/4 SBC (LSx) Engine Mounts are engineered to the highest ISO 9000 quality standards in the industry. Using finite element analysis has allowed us to provide you with the lightest and strongest engine mount possible for your street or race machine. LOJ Conversions Engine Mounts are made from CNC Water Jet Mild Steel and CNC bent for precision engine alignment. The brackets are powdercoated for long-lasting good looks and durability. The engine mount pedestals are CNC machined from billet 6061-T6 Aerospace Grade Aluminum. The bushings are Urethane and supplied by Energy Suspension to ensure the highest quality possible. All components are 100% made in the USA.