System Features The 1955-57 Thunderbird kit uses a cool only Heritage under dash system with engine-turned aluminum face which features high-output blower fans precision injection-molded case for light weight and compact fitment.Designed to withoutrk with the original heater.The kit includes the Heritage evaporator, SD7B10 compressor, engine bracket to withoutrk with the original generator or to use a Ford alternator hose kit and direct bolt-in condenser kit with drier. Instructions Installation Instructions download Important Ordering Information For complete kits, we may contact you to verify engine configuration to ensure we ship the correct compressor bracket. Please provide detailed engine configuration during checkout, in the shipping section, under "order notes." Vehicle Fitment warning California Proposition 65 arrow_drop_down WARNING: California proposition 65