1968 Ford Mustang Under Hood Performance/Compressor Conversion Kit (Sb & Bb). Complete kit combines our compressor conversion kit with a Superkool condenser assembly, new barrier style A/C hoses, and expansion valve to maximize the performance of the factory A/C system. Also includes a compressor safety switch to protect the new components from excessively high or low system pressures. Excellent choice for vehicles being retrofitted for newer automotive refrigerants.