This is a 7 Port power servo unit for a 1967 - 1970 Cadillac Eldorado. It’s been my experience that this will fit all 1967 - 1970 Cadillac Eldorado’s ( FWD ) that have a 7 port power servo. Deville’s use the same housing / body, but a different arm. You can easily change the arm on this one if your car uses a different arm. Not all cars are equipped with a 7 port servo, so please make sure this is correct for your application before buying it. This power servo is in excellent condition. The servo has been disassembled, the vacuum rotary valve resurfaced and resealed. Electrical contacts cleaned and tested for continuity, casings cleaned and painted, vacuum canister tested to hold vacuum, and reassembled. It is ready to install. Please also note that these Heat / A/C systems are a complex system with multiple switches / controls that are all vacuum operated and prone to failure with age. I have rebuilt and tested this unit and will guarantee it’s in like new operating condition, but there may be other issues with your system so please make sure this is the part you need before you buy it.