Energy Suspension Hyper-Flex Body Mount Bushing - Black / Cadmium - GM Fullsize Truck 1967-72 3-4108G HH-1.8 screw-in rocker studs and hardened

screw-in rocker studs and hardened guide plates

The 4778 features a 1

15/16 in x 21 Spline

Air-tight sealing allows the engine to pull greater vacuum for improved ring seal and power

Nitrous switch

Energy Suspension Hyper-Flex Body Mount Bushing - Black / Cadmium - GM Fullsize Truck 1967-72 3-4108G HH-1.8 screw-in rocker studs and hardenedWill replace distorted and worn out original rubber mounts to maintain car body and truck cab to bed alignment. Original rubber mounts are so soft they often crack, distort, and crush so badly they often fall off. And aluminum body mounts are too harsh for street use that they tend to break and cause other components to break. Energy's specially formulated Hyper Flex(TM) polyurethane cab and body mounts combine the best qualities of both: they're soft