If you have a Parker Store in your area, they should have the hose, and if you choose, they can put the crimped ends on the hoses as well. If you insist on maintaining the worm screw type clamps, make sure the bodies are in good shape and lubricate the worm screw mechanism before installing. Worm screw clamps for AC have the tang that helps trap the hose on the barbs. Worm screw clamps came from the factory on these cars and I have seen R12 stay in these systems for decades, but if the exact correct original look isn't super important, crimped ends are certainly better. If you ever change to 134A in the future, worm screw clamps don't do very well. The smaller molecules of 134A will make their way out of a worm screw clamp system in good condition in a couple years.
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