Need help reconnecting lines to radiator & compressor

Well since the radiator was stolen from it before I bought it I put in one I bought from the junkyard for my last hearse. Just to verify (and I hope its ok) are the radiators for a '77 Deville/Fleetwood the same used for the '77 Commercial Chassis?

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I know the second inlet down is for the upper radiator hose the rest im not 100% on. As you can see from the pic the heater hose was cut and disconnected same with the tranny lines and radiator hoses and overflow tank hoses.

Also, one of the A/C compressor lines was cut and disconnected.

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So my question is based on what you see for the radiator inlets/slots what goes where? And also what is this A/C hose called? It the lower hose that connects to the back of the compressor

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Thanks anyone who can help!
 
Most 1977/1978/1979 commercial chassis parts will interchange with the De Ville, with the exception of the power brake booster. The boosters look similar, but the commercial chassis booster is a heavy duty unit. The air conditioning lines are the same also, except if you have rear air conditioning. Then, the original factory hoses had tee fittings installed in them by GM so the rear air conditioning lines could be connected to the system. Once you get past the dashboard on the commercial chassis cars, everything including door handles, glass, etc is body builder specific. I have a 1978 Sedan De Ville parts car for spares for my 1978 Superior High Top ambulance, and have learned that just because it looks like it is the same, that you should never take that for granted. For this reason, I always consult the 1978 Cadillac parts manual and check each part to see if it is the same as the standard production car. As an example, the brake calipers are the same, however, the rotors are larger. The rear brakes are also larger, and the differential is completely different.
 
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