Makes Miata air conditioning conversions a breeze. Easily connect your MX5 or RX8 A/C lines to the GM CTSV compressor. We’ve designed these AC blocks to fit in the tight area around the subframe. CNC machined from 6061 T6 for precision tolerances. Manifold port sizes are 16mm suction and 12mm pressure. Any local A/C shop can sweat in your existing OE lines to the block. A cost-effective way to convert the AC without having to alter the GM compressor fittings. Includes o-rings and hardware.