From One A-body to Another (Air Conditioning)!

The firewalls on A/C cars is different. You can either cut out the area from a donor A/C car and weld it into the non air car, or modify the existing one in the non air car. You will also need to locate the proper brackets etc for the compressor for a slant 6. Belt length will be one of your easier obstacles. If you use a stock 6 cyl compressor and mounts it will be as simple as ordering a belt for the same car as yours, but with air. There also may be a different lower pulley and alternator?