Depending on the compressor you are looking for, leadtime could be up to 3 weeks. Our compressor kit can be ordered with two sizes of compressor: 18CC and 34CC. The 18CC compressor is for smaller cars and the 34CC compressor will work for anything up to large SUVS. For Buses or other large capacity vehicles – please contact us. Any compressor can be ordered with either 3 speed RPM control, PWM control, or CAN control. Please specify when ordering, if you do not – you will receive a compressor with 3 speed control. Operating voltage ranges for each option: 96V: 76V – 120V 144V: 101 – 180V 312V: 200V – 410V