Energy Suspension Hyper-Flex Front Lower/Upper Control Arm Bushing - Red - MG MGB 1963-80 1443A06 55 mm Journal

55 mm Journal

The big difference is in the shank design

72cc and 87cc

stock converter will work but best with 1800+ stall

Large surface area pulls more air at low speeds

Energy Suspension Hyper-Flex Front Lower/Upper Control Arm Bushing - Red - MG MGB 1963-80 1443A06 55 mm JournalProduct Description: Control Arm Bushing Hyper Flex Front Lower Upper Polyurethane Red MG MGB 1963 80 Energy Suspension is the world's leader in developing and manufacturing performance polyurethane automotive suspension products. Energy Suspension state of the art on site new product development program which carefully analyzes various vehicle reactions equipped with Energy Suspension Performance Polyurethane technology. Energy Suspension offers the