Did you use an Olds or F body condenser?
Will F body hose work on the Olds condenser?
to be honest, it was on a c10 truck, i was able to use all the other original parts. if you look up the parts on oreilly or some other parts site you can find the connection sizes.
a few years later, i ended up upgrading to a sanden style compressor with the dirty dingo kit: r4 to sanden serpentine adapter